| Coord 2000 | 20240-4231 |
Discov num | DON 984 |
Comp | Coord arcsec 2000 | 20 24 02.49 -42 31 05.3 |
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| Date first | 1930 |
Date last | 2008 |
Obs | 4 |
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| Pa first | 249 |
Pa last | 258 |
P.A. Now (θ) | 258° |
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| Sep first | 0.7 |
Sep last | 0.9 |
Sep. Now (ρ) | 0.9" |
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| Mag pri | 9.65 |
Mag sec | 9.62 |
delta mag (ΔM) | 0.03 |
Spectral class | A2V (white) |
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| Pri motion ra | +017 |
Sec motion ra | +017 |
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| Pri motion dec | -006 |
Sec motion dec | -006 |
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| Notes | |||||||||||
| Precise pa | 257.8 |
Precise sep | 0.941 |
Constellation | Sagittarius |
SAO | 230186 |
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| Tycho2 | 7957-00425-1 |
Gaia DR2 | 6679358664283089152 |
HD | 193831 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20240-4231 | DON 984 | 1991 | 3 | 249 | 0.4 | 9.65 | 9.62 | A2V | 202402.49-423105.3 | ||
| 20240-4231 | DON 984 | 2008 | 4 | 258 | 0.9 | 9.65 | 9.62 | A2V | 202402.49-423105.3 |