| Coord 2000 | 00220+4213 |
Discov num | HJ 1021 |
Comp | Coord arcsec 2000 | 00 21 57.78 +42 12 34.8 |
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| Date first | 1828 |
Date last | 2015 |
Obs | 17 |
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| Pa first | 247 |
Pa last | 247 |
P.A. Now (θ) | 247° |
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| Sep first | 4.0 |
Sep last | 6.0 |
Sep. Now (ρ) | 6" |
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| Mag pri | 9.68 |
Mag sec | 10.10 |
delta mag (ΔM) | 0.42 |
Spectral class | A2 (white) |
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| Pri motion ra | +009 |
Sec motion ra | +009 |
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| Pri motion dec | -003 |
Sec motion dec | -006 |
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| Notes | |||||||||||
| Precise pa | 247.1 |
Precise sep | 6.016 |
Constellation | Hydra |
SAO | 36300 |
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| Tycho2 | 2791-02276-1 |
Gaia DR2 | 385071683834444672 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 00220+4213 | HJ 1021 | 2001 | 8 | 246 | 6.1 | 9.68 | 10.10 | A2 | D | 002157.78+421234.8 | |
| 00220+4213 | HJ 1021 | 2002 | 10 | 246 | 6.2 | 9.68 | 10.10 | A2 | D | 002157.78+421234.8 | |
| 00220+4213 | HJ 1021 | 2015 | 12 | 247 | 6.0 | 9.68 | 10.10 | A2 | 002157.78+421234.8 |