-
Notifications
You must be signed in to change notification settings - Fork 0
/
nearstars.stc
3611 lines (3220 loc) · 81.3 KB
/
nearstars.stc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
# Nearby stars and star orbits out to 25 light years, supplementary
# to Celestia's stars.dat.
# Because the RECONS survey tabulation has not been updated since 2010,
# the data mostly comes from the SIMBAD database, as well as "The 10 parsec
# sample in the Gaia era" table (https://gruze.org/10pc/). Most parallaxes
# come from Gaia EDR3, which does not provide parallaxes for the brightest
# stars, so for those the Hipparcos parallaxes have been used. In some cases
# where Gaia EDR3 parallaxes exist for one of the component stars, those have
# been used; if two or more components have them, the weighted mean of the
# parallaxes has been used.
# Most brown dwarfs in this file do not have Gaia parallaxes, in which case the
# parallax comes from Kirkpatrick et al. (2021), ApJS 253 (1), 7
# "The Field Substellar Mass Function Based on the Full-sky 20 pc Census of
# 525 L, T, and Y Dwarfs"
# https://iopscience.iop.org/article/10.3847/1538-4365/abd107
# Other sources appear as comments for individual star systems.
# Additional Gliese designations are from Golovin et al. (2022) "The Fifth
# Catalogue of Nearby Stars", https://dc.g-vo.org/CNS5
# Because the magnitude system breaks down for extremely dim stars (such as late
# T or Y dwarfs), they have been given an arbitrary but extremely low AbsMag
# value of 40, and their radii have also been set to a value around ~1 Jupiter
# radius, if their radii are not known.
# Orbits are taken from the Sixth Catalog of Orbits of Visual Binary Stars
# (http://www.astro.gsu.edu/wds/orb6.html), with other sources in the comments
# below.
# For binary orbits, the direction of an orbit's node on the plane of the
# sky is often unknown - the orbits given below will appear correct when
# viewed from Earth, but the true orbit may be tilted either towards or away from
# the Earth.
# For a few orbits the nature of the node is known - these are
# marked with the phrase "fully specified orientation".
# Barycenter positions are based on mass estimates from the papers themselves. The
# values used are listed below.
Barycenter "Solar System Barycenter:SSB"
{
RA 0
Dec 0
Distance 0
}
0 "Sol:Sun"
{
OrbitBarycenter "Solar System Barycenter"
CustomOrbit "vsop87-sun"
SpectralType "G2V"
AbsMag 4.83
Temperature 5772
BoloCorrection -0.08
UniformRotation
{
Period 609.12 # 25.38 days
Inclination 7.25
AscendingNode 75.77
MeridianAngle 23.00 # standard meridian
}
}
70890 # Proxima Cen
{
RA 217.39232147
Dec -62.67607512
Distance 4.2465 # 768.0665 +/- 0.0499 mas
SpectralType "M5.5Ve"
AppMag 11.09
}
# Akeson et al. (2021), AJ 162 (1), 14
# "Precision Millimeter Astrometry of the α Centauri AB System"
# https://iopscience.iop.org/article/10.3847/1538-3881/abfaff
Barycenter "ALF Cen:Gliese 559"
{
RA 219.85892215
Dec -60.83163195
Distance 4.3441 # 750.81 +/- 0.38 mas
}
71683 # ALF Cen A
{
OrbitBarycenter "ALF Cen"
SpectralType "G2V"
AppMag 0.01
Radius 847000
EllipticalOrbit { # fully specified orientation
Period 79.762
SemiMajorAxis 10.66 # mass ratio 1.0788:0.9092
Eccentricity 0.51947
Inclination 82.33
AscendingNode 231.87
ArgOfPericenter 279.48
MeanAnomaly 200.56
}
}
71681 # ALF Cen B
{
OrbitBarycenter "ALF Cen"
SpectralType "K1V"
AppMag 1.33
Radius 597700
EllipticalOrbit { # fully specified orientation
Period 79.762
SemiMajorAxis 12.64 # mass ratio 1.0788:0.9092
Eccentricity 0.51947
Inclination 82.33
AscendingNode 231.87
ArgOfPericenter 99.48
MeanAnomaly 200.56
}
}
87937 # Barnard's Star
{
RA 269.44850253
Dec 4.73942005
Distance 5.9629 # 546.9759 +/- 0.0401 mas
SpectralType "M4V"
AppMag 9.511
}
# Lazorenko & Sahlmann (2018), A&A 618, A111
# "Updated astrometry and masses of the LUH 16 brown dwarf binary"
# https://arxiv.org/abs/1808.07835
# Magnitudes from Boffin et al. (2014), A&A 561, L4
# "Possible astrometric discovery of a substellar companion to the closest
# binary brown dwarf system WISE J104915.57-531906.1"
# https://www.aanda.org/articles/aa/full_html/2014/01/aa22975-13/aa22975-13.html
# Rotation periods from Apai, Nardiello & Bedin (2021), ApJ 906 (1), 64
# "TESS Observations of the Luhman 16 AB Brown Dwarf System: Rotational Periods,
# Lightcurve Evolution, and Zonal Circulation"
# https://iopscience.iop.org/article/10.3847/1538-4357/abcb97
Barycenter "Luhman 16:WISE 1049-5319:WISE J104915.57-531906.1:GJ 11551"
{
RA 162.30328243
Dec -53.31757381
Distance 6.5029 # 501.557 +/- 0.082 mas
}
"Luhman 16 A:WISE 1049-5319 A:WISE J104915.57-531906.1 A:GJ 11551 A"
{
OrbitBarycenter "Luhman 16"
SpectralType "L7.5"
AppMag 23.25
Radius 70000 # approx.
EllipticalOrbit { # fully specified orientation
Period 27.54
SemiMajorAxis 1.636 # mass ratio 33.51J:28.55J
Eccentricity 0.343
Inclination 135.69
AscendingNode 118.66
ArgOfPericenter 136.22
MeanAnomaly 127.58
}
RotationPeriod 6.94
}
"Luhman 16 B:WISE 1049-5319 B:WISE J104915.57-531906.1 B:GJ 11551 B"
{
OrbitBarycenter "Luhman 16"
SpectralType "T0.5"
AppMag 24.07
Radius 63000 # approx.
EllipticalOrbit { # fully specified orientation
Period 27.54
SemiMajorAxis 1.921 # mass ratio 33.51J:28.55J
Eccentricity 0.343
Inclination 135.69
AscendingNode 118.66
ArgOfPericenter 316.22
MeanAnomaly 127.58
}
RotationPeriod 5.28
}
# parameters from Kirkpatrick et al. (2021)
"WISE 0855-0714:WISE J085510.83-071442.5:GJ 11286"
{
RA 133.780984
Dec -7.243932
Distance 7.430 # 439.0 +/- 2.4 mas
SpectralType "Y4"
Radius 60000 # approx.
AbsMag 40 # extremely low
}
"CN Leo:Gliese 406:Wolf 359"
{
RA 164.10319031
Dec 7.00272694
Distance 7.8558 # 415.1794 +/- 0.0684 mas
SpectralType "M6V"
AppMag 13.507
}
54035 # Lalande 21185
{
RA 165.83095968
Dec 35.94865303
Distance 8.3044 # 392.7529 +/- 0.0321 mas
SpectralType "M2V"
AppMag 7.520
}
# Parameters from Bond et al. (2017), ApJ 840 (2), 70
# "The Sirius System and Its Astrophysical Puzzles: Hubble Space Telescope and
# Ground-based Astrometry"
# https://iopscience.iop.org/article/10.3847/1538-4357/aa6af8
Barycenter 32349 "Sirius:Alhabor:ALF CMa:9 CMa:Gliese 244:ADS 5423"
{
RA 101.28715533
Dec -16.71611586
Distance 8.608 # 378.9 +/- 1.4 mas
}
"Sirius A:Alhabor A:ALF CMa A:9 CMa A:Gliese 244 A:ADS 5423 A"
{
OrbitBarycenter "Sirius"
SpectralType "A1V"
AppMag -1.46
Radius 1192700
EllipticalOrbit { # fully specified orientation
Period 50.1284
SemiMajorAxis 6.53 # mass ratio 2.063:1.018
Eccentricity 0.59142
Inclination 97.01
AscendingNode 161.67
ArgOfPericenter 5.90
MeanAnomaly 38.99
}
}
"Sirius B:Alhabor B:ALF CMa B:9 CMa B:Gliese 244 B:ADS 5423 B"
{
OrbitBarycenter "Sirius"
SpectralType "DA2"
AppMag 8.44
Radius 5634
EllipticalOrbit { # fully specified orientation
Period 50.1284
SemiMajorAxis 13.25 # mass ratio 2.063:1.018
Eccentricity 0.59142
Inclination 97.01
AscendingNode 161.67
ArgOfPericenter 185.90
MeanAnomaly 38.99
}
}
# Distance and radii from same source as orbit
# Rotation periods from Barnes et al. (2017), MNRAS 471 (1), 811
# "Surprisingly different star-spot distributions on the near equal-mass
# equal-rotation-rate stars in the M dwarf binary GJ 65 AB"
# https://arxiv.org/abs/1706.03979
Barycenter "Gliese 65:Luyten 726-8"
{
RA 24.77161351 # mass ratio 0.1225:0.1195
Dec -17.94799520
Distance 8.728 # 373.70 +/- 2.70 mas
}
"BL Cet:Gliese 65 A:Luyten 726-8 A"
{
OrbitBarycenter "Gliese 65"
SpectralType "M5.5V"
AppMag 12.7
Radius 114790
EllipticalOrbit { # fully specified orbit
Period 26.284
SemiMajorAxis 2.72 # mass ratio 0.1225:0.1195
Eccentricity 0.6185
Inclination 113.55
AscendingNode 47.80
ArgOfPericenter 357.54
MeanAnomaly 21.93
}
RotationPeriod 5.832
}
"UV Cet:Gliese 65 B:Luyten 726-8 B"
{
OrbitBarycenter "Gliese 65"
SpectralType "M6V"
AppMag 13.2
Radius 110600
EllipticalOrbit { # fully specified orbit
Period 26.284
SemiMajorAxis 2.79 # mass ratio 0.1225:0.1195
Eccentricity 0.6185
Inclination 113.55
AscendingNode 47.80
ArgOfPericenter 177.54
MeanAnomaly 21.93
}
RotationPeriod 5.4432
}
92403 # Ross 154
{
RA 282.45878902
Dec -23.83709745
Distance 9.7063 # 336.0266 +/- 0.0317 mas
SpectralType "M3.5Ve"
AppMag 10.495
}
"HH And:Gliese 905:Ross 248"
{
RA 355.48001526
Dec 44.17037570
Distance 10.3057 # 316.4812 +/- 0.0444 mas
SpectralType "M5.0V"
AppMag 12.28
}
16537 # Eps Eri
{
RA 53.22829342
Dec -9.45816822
Distance 10.5016 # 310.5773 +/- 0.1355 mas
SpectralType "K2V"
AppMag 3.73
Temperature 5076 # 5076 +/- 30 K (Heiter et al. 2015)
Radius 511000 # 0.735 +/- 0.005 Sol (di Folco et al. 2007)
UniformRotation
{
Period 274 # 11.4 +/- 0.2 days (Roettenbacher et al. 2022)
Inclination 12 # inclination = 70 degrees
AscendingNode 88 # position angle of rotation axis = 335 degrees
}
}
114046 # Lacaille 9352
{
RA 346.50391668
Dec -35.84716421
Distance 10.7241 # 304.1354 +/- 0.0200 mas
SpectralType "M2V"
AppMag 7.34
}
57548 # Ross 128
{
RA 176.93768799
Dec 0.79911997
Distance 11.0074 # 296.3053 +/- 0.0302 mas
SpectralType "M4V"
AppMag 11.153
}
# Segransan et al. (2000), A&A 364, 665
# "Accurate masses of very low mass stars. III. 16 new or improved masses"
# http://adsabs.harvard.edu/abs/2000A%26A...364..665S
Barycenter "Gliese 866:Luyten 789-6"
{
RA 339.650693945
Dec -15.28964705
Distance 11.109 # 293.6 +/- 0.9 mas
}
Barycenter "Gliese 866 A:Luyten 789-6 A"
{
OrbitBarycenter "Gliese 866"
EllipticalOrbit { # fully specified orientation
Period 2.2537
SemiMajorAxis 0.415 # mass ratio (0.1187:0.0930):0.1145
Eccentricity 0.439
Inclination 89.43
AscendingNode 358.27
ArgOfPericenter 61.70
MeanAnomaly 243.55
}
}
"EZ Aqr:Gliese 866 Aa:Luyten 789-6 Aa"
{
OrbitBarycenter "Gliese 866 A"
SpectralType "M5V"
AppMag 13.03
EllipticalOrbit {
Period 0.01037 # 3.786516 d
SemiMajorAxis 0.01244 # to match period and mass ratio 0.1187:0.0930
Inclination 90 # plane-of-sky inclination 116.5 deg
AscendingNode 2 # guess - to roughly match plane of B
ArgOfPericenter 144
}
}
"Gliese 866 Ab:Luyten 789-6 Ab"
{
OrbitBarycenter "Gliese 866 A"
SpectralType "M7V" # from mass
AppMag 15.07
EllipticalOrbit {
Period 0.01037 # 3.786516 d
SemiMajorAxis 0.01589 # to match period and mass ratio 0.1187:0.0930
Inclination 90 # guess - to match plane of B
AscendingNode 2 # guess - to match plane of B
ArgOfPericenter 324
}
}
"Gliese 866 B:Luyten 789-6 B"
{
OrbitBarycenter "Gliese 866"
SpectralType "M6V" # from apparent magnitude
AppMag 13.27
EllipticalOrbit { # fully specified orientation
Period 2.2537
SemiMajorAxis 0.768 # mass ratio (0.1187:0.0930):0.1145
Eccentricity 0.439
Inclination 89.43
AscendingNode 358.27
ArgOfPericenter 241.70
MeanAnomaly 243.55
}
}
# Physical parameters from Kervella et al. (2008), A&A 488 (2), 667
# "The radii of the nearby K5V and K7V stars 61 Cygni A & B. CHARA/FLUOR
# interferometry and CESAM2k modeling"
# https://arxiv.org/abs/0806.4049
Barycenter "61 Cyg:Gliese 820:ADS 14636"
{
RA 316.75090091 # mass ratio 0.690:0.605
Dec 38.76022325 # A: 285.9949 +/- 0.0599 mas
Distance 11.404 # B: 286.0054 +/- 0.0289 mas
}
104214 "61 Cyg A:V1803 Cyg:Gliese 820 A:ADS 14636 A"
{
OrbitBarycenter "61 Cyg"
SpectralType "K5V"
AppMag 5.21
Radius 462600
EllipticalOrbit {
Period 618.7
SemiMajorAxis 41.24 # mass ratio 0.69:0.605
Eccentricity 0.54
Inclination 101
AscendingNode 295
ArgOfPericenter 281
MeanAnomaly 175
}
}
104217 "61 Cyg B:Gliese 820 B:ADS 14636 B"
{
OrbitBarycenter "61 Cyg"
SpectralType "K7V"
AppMag 6.03
Radius 413900
EllipticalOrbit {
Period 618.7
SemiMajorAxis 47.03 # mass ratio 0.69:0.605
Eccentricity 0.54
Inclination 101
AscendingNode 295
ArgOfPericenter 101
MeanAnomaly 175
}
}
# Orbit from Bond et al. (2018), Res. Notes AAS 2 (3), 147
# "Final Hubble Space Telescope Astrometry of the Procyon Binary System"
# https://iopscience.iop.org/article/10.3847/2515-5172/aad9a4
# Parameters from Bond et al. (2015), ApJ 813 (2), 106
# "Hubble Space Telescope Astrometry of the Procyon System"
# https://iopscience.iop.org/article/10.1088/0004-637X/813/2/106
Barycenter 37279 "Procyon:Elgomaisa:ALF CMi:10 CMi:Gliese 280:ADS 6251"
{
RA 114.82549791
Dec 5.22498756
Distance 11.444 # 285.0 +/- 0.7 mas
}
"Procyon A:Elgomaisa A:ALF CMi A:10 CMi A:Gliese 280 A:ADS 6251 A"
{
OrbitBarycenter "Procyon"
SpectralType "F5IV"
AppMag 0.37
EllipticalOrbit { # fully specified orientation
Period 40.844
SemiMajorAxis 4.32 # mass ratio 1.478:0.592
Eccentricity 0.39799
Inclination 42.60
AscendingNode 25.19
ArgOfPericenter 90.25
MeanAnomaly 281.41
}
}
"Procyon B:Elgomaisa B:ALF CMi B:10 CMi B:Gliese 280 B:ADS 6251 B"
{
OrbitBarycenter "Procyon"
SpectralType "DQZ"
Temperature 7740
Radius 8571
AppMag 10.82
EllipticalOrbit { # fully specified orientation
Period 40.844
SemiMajorAxis 10.80 # mass ratio 1.478:0.592
Eccentricity 0.39799
Inclination 42.60
AscendingNode 25.19
ArgOfPericenter 270.25
MeanAnomaly 281.41
}
}
# masses from Mann et al. (2015), ApJ 804 (1), 64
# "How to Constrain Your M Dwarf: Measuring Effective Temperature,
# Bolometric Luminosity, Mass, and Radius"
# http://iopscience.iop.org/article/10.1088/0004-637X/804/1/64/meta
Barycenter "Gliese 725:Struve 2398:ADS 11632"
{
RA 280.68307740 # mass ratio 0.334:0.248
Dec 59.63698903 # A: 283.8401 +/- 0.0220 mas
Distance 11.491 # B: 283.8378 +/- 0.0287 mas
}
91768 "Gliese 725 A:Struve 2398 A:ADS 11632 A"
{
OrbitBarycenter "ADS 11632"
SpectralType "M3V"
AppMag 8.91
EllipticalOrbit {
Period 408
SemiMajorAxis 20.84 # mass ratio 0.334:0.248
Eccentricity 0.53
Inclination 111.9
AscendingNode 146.1
ArgOfPericenter 243.5
MeanAnomaly 198.5
}
}
91772 "Gliese 725 B:Struve 2398 B:ADS 11632 B"
{
OrbitBarycenter "ADS 11632"
SpectralType "M3.5V"
AppMag 9.69
EllipticalOrbit {
Period 408
SemiMajorAxis 28.06 # mass ratio 0.334:0.248
Eccentricity 0.53
Inclination 111.9
AscendingNode 146.1
ArgOfPericenter 63.5
MeanAnomaly 198.5
}
}
# Pinamonti et al. (2018), A&A 617, A104
# "The HADES RV Programme with HARPS-N at TNG. VIII. GJ15A: a multiple
# wide planetary system sculpted by binary interaction"
# https://arxiv.org/abs/1804.03476
Barycenter 1475 "Gliese 15:Groombridge 34:ADS 246"
{
RA 4.61664355 # mass ratio 0.38:0.15
Dec 44.02590687 # A: 280.7068 +/- 0.0203 mas
Distance 11.619 # B: 280.6947 +/- 0.0278 mas
}
"GX And:Gliese 15 A:Groombridge 34 A:ADS 246 A"
{
OrbitBarycenter "Groombridge 34"
SpectralType "M2V"
AppMag 8.13
Radius 264400
EllipticalOrbit {
Period 1230
SemiMajorAxis 26.32 # mass ratio 0.38:0.15
Eccentricity 0.53
Inclination 172
AscendingNode 194
ArgOfPericenter 75
MeanAnomaly 296
}
}
"GQ And:Gliese 15 B:Groombridge 34 B:ADS 246 B"
{
OrbitBarycenter "Groombridge 34"
SpectralType "M3.5V"
AppMag 11.04
Radius 125200
EllipticalOrbit {
Period 1230
SemiMajorAxis 66.68 # mass ratio 0.38:0.15
Eccentricity 0.53
Inclination 172
AscendingNode 194
ArgOfPericenter 255
MeanAnomaly 296
}
}
"DX Cnc:GJ 1111:Giclas 51-15"
{
RA 127.45009240
Dec 26.77328597
Distance 11.6797 # 279.2496 +/- 0.0637 mas
SpectralType "M6.5V"
AppMag 14.81
}
Barycenter "EPS Ind:Gliese 845" # orbit of A & B components unknown
{
RA 330.90487220 # mass ratio 0.732:(0.0716:0.0669)
Dec -56.79670693
Distance 11.853
}
108870 "EPS Ind A:Gliese 845 A"
{
RA 330.87240788
Dec -56.79725466
Distance 11.8670 # 274.8431 +/- 0.0956 mas
SpectralType "K5V"
AppMag 4.69
}
# Dieterich et al. (2018) "Dynamical Masses of ε Indi B and C: Two Massive
# Brown Dwarfs at the Edge of the Stellar–substellar Boundary"
# https://arxiv.org/abs/1807.09880
# Duplicated in CNS5: Gliese 845 B = GJ 13185
Barycenter "EPS Ind B:CI Ind:Gliese 845 B:GJ 13185"
{
RA 331.07645260
Dec -56.79381207
Distance 11.780 # 276.88 +/- 0.81 mas
}
"EPS Ind Ba:CI Ind A:Gliese 845 Ba:GJ 13185 A"
{
OrbitBarycenter "EPS Ind B"
SpectralType "T1.5V"
Temperature 1320
Radius 59000
AppMag 24.12
EllipticalOrbit {
Period 11.41
SemiMajorAxis 1.26 # mass ratio 75.0J:70.1J
Eccentricity 0.47
Inclination 77.95
AscendingNode 138.03
ArgOfPericenter 87.11
MeanAnomaly 49.82
}
}
"EPS Ind Bb:CI Ind B:Gliese 845 Bb:GJ 13185 B"
{
OrbitBarycenter "EPS Ind B"
SpectralType "T6V"
Temperature 910
Radius 61000
AbsMag 40 # extremely low
EllipticalOrbit {
Period 11.41
SemiMajorAxis 1.35 # mass ratio 75.0J:70.1J
Eccentricity 0.47
Inclination 77.95
AscendingNode 138.03
ArgOfPericenter 267.11
MeanAnomaly 49.82
}
}
8102 # Tau Cet
{
RA 26.00905506
Dec -15.93368020
Distance 11.9118 # 273.8097 +/- 0.1701 mas
SpectralType "G8V"
AppMag 3.50
Radius 552000 # 0.793 +/- 0.004 Sol
UniformRotation
{
Period 816 # 34 days (Baliunas et al. 1996)
}
}
"GJ 1061:Luyten 372-58"
{
RA 54.00339388
Dec -44.51436232
Distance 11.9839 # 272.1615 +/- 0.0316 mas
SpectralType "M5.5V"
AppMag 13.03
}
5643 # YZ Cet
{
RA 18.13325425
Dec -16.99615487
Distance 12.1222 # 269.0573 +/- 0.0337 mas
SpectralType "M4.0Ve"
AppMag 12.074
}
36208 # Luyten's Star
{
RA 111.85462844
Dec 5.20938270
Distance 12.3485 # 264.1269 +/- 0.0413 mas
SpectralType "M3.5V"
AppMag 9.872
}
"Teegarden's Star:SO0253+1652:SO025300.5+165258:GJ 10393"
{
RA 43.26964248
Dec 16.86437382
Distance 12.4970 # 260.9884 +/- 0.0934 mas
SpectralType "M7.0V"
AppMag 15.40
}
24186 # Kapteyn's Star
{
RA 77.95993735
Dec -45.04381270
Distance 12.8308 # 254.1986 +/- 0.0168 mas
SpectralType "M1VI"
AppMag 8.853
}
105090 # Lacaille 8760
{
RA 319.29501814
Dec -38.87245640
Distance 12.9472 # 251.9124 +/- 0.0352 mas
SpectralType "M1V"
AppMag 6.68
}
# Used Gaia EDR3 parallax for A
# parameters from Vigan et al. (2012), A&A 540, A131
# "High-contrast spectroscopy of SCR J1845-6357 B"
# https://www.aanda.org/articles/aa/abs/2012/04/aa18426-11/aa18426-11.html
Barycenter "SCR 1845-6357:GJ 12724"
{
RA 281.29804386
Dec -63.96056737
Distance 13.0638 # 249.6651 +/- 0.1330 mas
}
"SCR 1845-6357 A:GJ 12724 A"
{
OrbitBarycenter "SCR 1845-6357"
SpectralType "M8.5V"
AppMag 17.40
EllipticalOrbit {
Period 24 # estimate
SemiMajorAxis 1.6 # estimated mass ratio 0.07:0.045
ArgOfPericenter 180
}
}
"SCR 1845-6357 B:GJ 12724 B"
{
OrbitBarycenter "SCR 1845-6357"
SpectralType "T6V"
AbsMag 33.5 # for approximate radius in Celestia
EllipticalOrbit {
Period 24 # estimate
SemiMajorAxis 2.4 # estimated mass ratio 0.07:0.045
}
}
Barycenter 110893 "Gliese 860:Kruger 60:ADS 15972"
{
RA 336.99185002 # mass ratio 0.30:0.17
Dec 57.69405691 # only used DR2 parallax of A
Distance 13.0780 # 249.3926 +/- 0.1653 mas
}
1000923991 "Gliese 860 A:Kruger 60 A:ADS 15972 A"
{
OrbitBarycenter "Kruger 60"
SpectralType "M3V"
AppMag 9.93
EllipticalOrbit {
Period 44.581
SemiMajorAxis 3.48 # mass ratio 0.30:0.17
Eccentricity 0.408
Inclination 37.20
AscendingNode 129.48
ArgOfPericenter 262.00
MeanAnomaly 240.36
}
}
2000923991 "DO Cep:Gliese 860 B:Kruger 60 B:ADS 15972 B"
{
OrbitBarycenter "Kruger 60"
SpectralType "M4V"
AppMag 11.41
EllipticalOrbit {
Period 44.67
SemiMajorAxis 6.15 # mass ratio 0.30:0.17
Eccentricity 0.408
Inclination 37.20
AscendingNode 129.48
ArgOfPericenter 82.00
MeanAnomaly 240.36
}
}
"DENIS 1048-3956:DENIS J104814.6-395606:RECONS 2:GJ 11547"
{
RA 162.05388772
Dec -39.93962595
Distance 13.1932 # 247.2156 +/- 0.0512 mas
SpectralType "M9V"
AppMag 17.532
}
# parallax from Leggett et al. (2012), ApJ 748 (2), 74
# "The Properties of the 500 K Dwarf UGPS J072227.51-054031.2 and a Study
# of the Far-red Flux of Cold Brown Dwarfs"
# https://iopscience.iop.org/article/10.1088/0004-637X/748/2/74
"UGPS 0722-0540:UGPS J072227.51-054031.2:GJ 11075"
{
RA 110.6161250
Dec -5.6753056
Distance 13.433 # 242.8 +/- 2.40 mas
SpectralType "T9V"
Temperature 505
Radius 60000 # approx.
AbsMag 40 # extremely low
}
# masses and parallaxes from Benedict et al. (2016), AJ 152 (5), 141
# "The Solar Neighborhood. XXXVII: The Mass-Luminosity Relation for Main-sequence
# M Dwarfs"
# http://iopscience.iop.org/article/10.3847/0004-6256/152/5/141/meta
Barycenter 30920 "Gliese 234:Ross 614"
{
RA 97.35079477
Dec -2.81713072
Distance 13.533 # 241.0 +/- 0.4 mas
}
"V577 Mon:Gliese 234 A:Ross 614 A"
{
OrbitBarycenter "Ross 614"
SpectralType "M4.5V"
AppMag 11.15
EllipticalOrbit { # fully specified orientation
Period 16.63
SemiMajorAxis 1.49 # mass ratio 0.223:0.109
Eccentricity 0.38
Inclination 93.87
AscendingNode 322.71
ArgOfPericenter 167.29
MeanAnomaly 15.85
}
}
"Gliese 234 B:Ross 614 B"
{
OrbitBarycenter "Ross 614"
SpectralType "M7V"
AppMag 14.23
EllipticalOrbit { # fully specified orientation
Period 16.63
SemiMajorAxis 3.05 # mass ratio 0.223:0.109
Eccentricity 0.38
Inclination 93.87
AscendingNode 322.71
ArgOfPericenter 347.29
MeanAnomaly 15.85
}
}
# masses and parallaxes from Benedict et al. (2016), AJ 152 (5), 141
# "The Solar Neighborhood. XXXVII: The Mass-Luminosity Relation for Main-sequence
# M Dwarfs"
# http://iopscience.iop.org/article/10.3847/0004-6256/152/5/141/meta
Barycenter "Gliese 473:Wolf 424"
{
RA 188.31458052 # mass ratio 0.124:0.113
Dec 9.02196651
Distance 13.850 # 235.5 +/- 2.9 mas
}
"Gliese 473 A:Wolf 424 A"
{
OrbitBarycenter "Wolf 424"
SpectralType "M5.5V"
AppMag 13.18
EllipticalOrbit {
Period 15.81
SemiMajorAxis 1.86 # mass ratio 0.124:0.113
Eccentricity 0.30
Inclination 29.15
AscendingNode 357.44
ArgOfPericenter 80.72
MeanAnomaly 172.43
}
}
"FL Vir:Gliese 473 B:Wolf 424 B"
{
OrbitBarycenter "Wolf 424"
SpectralType "M5.5V"
AppMag 13.17
EllipticalOrbit {
Period 15.81
SemiMajorAxis 2.04 # mass ratio 0.124:0.113
Eccentricity 0.30
Inclination 29.15
AscendingNode 357.44
ArgOfPericenter 260.72
MeanAnomaly 172.43
}
}
80824 # Wolf 1061
{
RA 247.57481416
Dec -12.66785108
Distance 14.0500 # 232.1390 +/- 0.0268 mas
SpectralType "M3V"
AppMag 10.072
}
3829 # van Maanen's Star
{
RA 12.29674025
Dec 5.37655661
Distance 14.0718 # 231.7800 +/- 0.0183 mas
SpectralType "DZ7.5"
AppMag 12.374
}
439 # Gliese 1
{
RA 1.38328415
Dec -37.36774403
Distance 14.1747 # 230.0970 +/- 0.0362 mas
SpectralType "M2V"
AppMag 8.562
}
"TZ Ari:Gliese 83.1:GJ 9066:Luyten 1159-16"
{
RA 30.05898705
Dec 13.04407120
Distance 14.5780 # 223.7321 +/- 0.0699 mas
SpectralType "M4.5V"
AppMag 12.298
}