Title: An Update on Monitoring Stellar Orbits in the Galactic Center
Authors: Gillessen S., Plewa P.M., Eisenhauer F., Sari R., Waisberg I.,
Habibi M., Pfuhl O., George E., Dexter J., von Fellenberg S., Ott T.,
Genzel R.
Table: Orbital parameters of the 40 stars for which we were able to determine orbits
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Byte-by-byte Description of file: apjaa5c41t3_mrt.txt
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Bytes Format Units Label Explanations
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1- 4 A4 --- Star Star Name
6- 13 F8.4 arcsec a semi-major axis of the orbit, from Sag A* (1)
15- 20 F6.4 arcsec e_a Uncertainty in a
22- 27 F6.4 --- e eccentricity (1)
29- 34 F6.4 --- e_e Uncertainty in e
36- 41 F6.2 deg i inclination
43- 46 F4.2 deg e_i Uncertainty in i
48- 53 F6.2 deg {Omega} position angle of the ascending node
55- 59 F5.2 deg e_{Omega} Uncertainty in {Omega}
61- 66 F6.2 deg w longitude of the pericenter
68- 72 F5.2 deg e_w Uncertainty in w
74- 80 F7.2 yr Tp epoch of pericenter passage, fractional year (2)
82- 87 F6.2 yr e_Tp Uncertainty in Tp
89- 95 F7.2 yr Per ?="" Orbital period (1, 2)
97-103 F7.2 yr e_Per ?="" Uncertainty in Per
105-105 A1 --- SpT [el] spectral type. 'e': early-type stars,
'l': late-type stars
107-111 F5.2 mag Kmag K-band magnitude
113-116 F4.2 --- r Global rescaling factor
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Note (1): Object S111 formally has a negative semi major axis, indicative for
a hyperbolic orbit with e > 1 and no solution for an orbital period.
Note (2): Time is measured in Julian years of 365.25 days since J2000.0.
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S1 0.595 0.024 0.556 0.018 119.14 0.21 342.04 0.32 122.3 1.4 2001.80 0.15 166.0 5.8 e 14.7 1.75
S2 0.1255 0.0009 0.8839 0.0019 134.18 0.40 226.94 0.60 65.51 0.57 2002.33 0.01 16.00 0.02 e 13.95 1.13
S4 0.3570 0.0037 0.3905 0.0059 80.33 0.08 258.84 0.07 290.8 1.5 1957.4 1.2 77.0 1.0 e 14.4 1.25
S6 0.6574 0.0006 0.8400 0.0003 87.24 0.06 85.07 0.12 116.23 0.07 2108.61 0.03 192.0 0.17 e 15.4 1.58
S8 0.4047 0.0014 0.8031 0.0075 74.37 0.30 315.43 0.19 346.70 0.41 1983.64 0.24 92.9 0.41 e 14.5 1.18
S9 0.2724 0.0041 0.644 0.020 82.41 0.24 156.60 0.10 150.6 1.0 1976.71 0.92 51.3 0.70 e 15.1 1.65
S12 0.2987 0.0018 0.8883 0.0017 33.56 0.49 230.1 1.8 317.9 1.5 1995.59 0.04 58.9 0.22 e 15.5 2.37
S13 0.2641 0.0016 0.4250 0.0023 24.70 0.48 74.5 1.7 245.2 2.4 2004.86 0.04 49.00 0.14 e 15.8 3.25
S14 0.2863 0.0036 0.9761 0.0037 100.59 0.87 226.38 0.64 334.59 0.87 2000.12 0.06 55.3 0.48 e 15.7 2.16
S17 0.3559 0.0096 0.397 0.011 96.83 0.11 191.62 0.21 326.0 1.9 1991.19 0.41 76.6 1.0 l 15.3 3.00
S18 0.2379 0.0015 0.471 0.012 110.67 0.18 49.11 0.18 349.46 0.66 1993.86 0.16 41.9 0.18 e 16.7 2.28
S19 0.520 0.094 0.750 0.043 71.96 0.35 344.60 0.62 155.2 2.3 2005.39 0.16 135. 14. e 16. 2.57
S21 0.2190 0.0017 0.764 0.014 58.8 1.0 259.64 0.62 166.4 1.1 2027.40 0.17 37.00 0.28 l 16.9 1.60
S22 1.31 0.28 0.449 0.088 105.76 0.95 291.7 1.4 95. 20. 1996.9 10.2 540. 63. e 16.6 2.78
S23 0.253 0.012 0.56 0.14 48.0 7.1 249. 13. 39.0 6.7 2024.7 3.7 45.8 1.6 e 17.8 2.08
S24 0.944 0.048 0.8970 0.0049 103.67 0.42 7.93 0.37 290. 15. 2024.50 0.03 331. 16. l 15.6 1.54
S29 0.428 0.019 0.728 0.052 105.8 1.7 161.96 0.80 346.5 5.9 2025.96 0.94 101.0 2.0 e 16.7 3.32
S31 0.449 0.010 0.5497 0.0025 109.03 0.27 137.16 0.30 308.0 3.0 2018.07 0.14 108. 1.2 e 15.7 3.16
S33 0.657 0.026 0.608 0.064 60.5 2.5 100.1 5.5 303.7 1.6 1928. 12. 192.0 5.2 e 16. 2.21
S38 0.1416 0.0002 0.8201 0.0007 171.1 2.1 101.06 0.24 17.99 0.25 2003.19 0.01 19.2 0.02 l 17. 2.48
S39 0.370 0.015 0.9236 0.0021 89.36 0.73 159.03 0.10 23.3 3.8 2000.06 0.06 81.1 1.5 16.8 3.27
S42 0.95 0.18 0.567 0.083 67.16 0.66 196.14 0.75 35.8 3.2 2008.24 0.75 335. 58. e 17.5 1.65
S54 1.20 0.87 0.893 0.078 62.2 1.4 288.35 0.70 140.8 2.3 2004.46 0.07 477. 199. e 17.5 2.60
S55 0.1078 0.0010 0.7209 0.0077 150.1 2.2 325.5 4.0 331.5 3.9 2009.34 0.04 12.80 0.11 17.5 1.61
S60 0.3877 0.0070 0.7179 0.0051 126.87 0.30 170.54 0.85 29.37 0.29 2023.89 0.09 87.1 1.4 e 16.3 1.65
S66 1.502 0.095 0.128 0.043 128.5 1.6 92.3 3.2 134. 17. 1771. 38. 664. 37. e 14.8 1.70
S67 1.126 0.026 0.293 0.057 136.0 1.1 96.5 6.4 213.5 1.6 1705. 22. 431. 10. e 12.1 1.43
S71 0.973 0.040 0.899 0.013 74.0 1.3 35.16 0.86 337.8 4.9 1695. 21. 346. 11. e 16.1 1.87
S83 1.49 0.19 0.365 0.075 127.2 1.4 87.7 1.2 203.6 6.0 2046.8 6.3 656. 69. e 13.6 1.82
S85 4.6 3.30 0.78 0.15 84.78 0.29 107.36 0.43 156.3 6.8 1930.2 9.8 3580. 2550. l 15.6 1.50
S87 2.74 0.16 0.224 0.027 119.54 0.87 106.32 0.99 336.1 7.7 611. 154. 1640. 105. e 13.6 1.38
S89 1.081 0.055 0.639 0.038 87.61 0.16 238.99 0.18 126.4 4.0 1783. 26. 406. 27. l 15.3 1.16
S91 1.917 0.089 0.303 0.034 114.49 0.32 105.35 0.74 356.4 1.6 1108. 69. 958. 50. e 12.2 1.33
S96 1.499 0.057 0.174 0.022 126.36 0.96 115.66 0.59 233.6 2.4 1646. 16. 662. 29. e 10. 1.31
S97 2.32 0.46 0.35 0.11 113.0 1.3 113.2 1.4 28. 14. 2132. 29. 1270. 309. e 10.3 1.22
S111 -12.3 8.4 1.092 0.064 102.68 0.40 52.34 0.75 132.4 3.3 1947.7 4.5 l 13.8 0.97
S145 1.12 0.18 0.50 0.25 83.7 1.6 263.92 0.94 185. 16. 1808. 58. 426. 71. l 17.5 1.46
S175 0.414 0.039 0.9867 0.0018 88.53 0.60 326.83 0.78 68.52 0.40 2009.51 0.01 96.2 5.0 e 17.5 2.72
R34 1.81 0.15 0.641 0.098 136.0 8.3 330. 19. 57.0 8.0 1522. 52. 877. 83. e 14. 1.35
R44 3.9 1.4 0.27 0.27 131.0 5.2 80.5 7.1 217. 24. 1963. 85. 2730. 1350. e 14. 1.11