Coord 2000 | 00057+4549 |
Discov num | STT 547 |
Comp | AF |
Coord arcsec 2000 | 00 05 41.03 +45 48 43.3 |
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Date first | 1897 |
Date last | 2018 |
Obs | 41 |
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Pa first | 254 |
Pa last | 254 |
P.A. Now (θ) | 254° |
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Sep first | 327.6 |
Sep last | 330.0 |
Sep. Now (ρ) | 330" |
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Mag pri | 8.98 |
Mag sec | 10.19 |
delta mag (ΔM) | 1.21 |
Spectral class | K6V+M2e (yellow-orange/red) |
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Pri motion ra | +879 |
Sec motion ra | +870 |
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Pri motion dec | -154 |
Sec motion dec | -151 |
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Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 36046 | 00 05 41 +45 48 43 | STT 547 AB | 2020 | 428 | 191 | 5.9 | 8.98 | 9.15 | 0.17 | Y | ||
Show | 36046 | 00 05 41 +45 48 43 | STT 547 AC | 2018 | 29 | 263 | 117.0 | 8.98 | 13.71 | 4.73 | |||
Show | 36046 | 00 05 41 +45 48 43 | STT 547 AD | 2018 | 37 | 230 | 108.4 | 8.98 | 12.51 | 3.53 | |||
Show | 36046 | 00 05 41 +45 48 43 | STT 547 AE | 2018 | 46 | 346 | 58.7 | 8.98 | 11.75 | 2.77 | |||
Show | 36046 | 00 05 41 +45 48 43 | STT 547 AF | 2018 | 41 | 254 | 330.0 | 8.98 | 10.19 | 1.21 | Y | <=== | |
Show | 36046 | 00 05 41 +45 48 43 | POP 217 AP | 2018 | 37 | 314 | 17.4 | 8.98 | 13.40 | 4.42 | |||
Show | 36046 | 00 05 41 +45 48 43 | POP 217 AQ | 2006 | 7 | 130 | 20.0 | 8.98 | 16.00 | 7.02 | |||
Show | 36046 | 00 05 41 +45 48 43 | POP 217 AX | 2006 | 2 | 222 | 12.0 | 8.98 | |||||
Show | 36046 | 00 05 41 +45 48 43 | POP 217 AY | 2018 | 9 | 78 | 188.8 | 8.98 | 14.80 | 5.82 | |||
Show | 36048 | 00 05 41 +45 48 37 | STT 547 BC | 2016 | 8 | 266 | 115.7 | 9.15 | 13.71 | 4.56 | |||
Show | 36048 | 00 05 41 +45 48 37 | STT 547 BD | 2016 | 10 | 233 | 106.4 | 9.15 | 12.51 | 3.36 | |||
Show | 36048 | 00 05 41 +45 48 37 | STT 547 BE | 2016 | 16 | 346 | 64.4 | 9.15 | 11.75 | 2.60 | |||
Show | 36048 | 00 05 41 +45 48 37 | STT 547 BF | 2018 | 35 | 251 | 324.2 | 9.15 | 10.19 | 1.04 | |||
Show | 36048 | 00 05 41 +45 48 37 | STT 547 BP | 2016 | 9 | 331 | 20.3 | 9.15 | 13.10 | 3.95 | |||
Show | 36046 | 00 05 31 +45 48 26 | PAL 2 Ca,Cb | 2016 | 20 | 91 | 6.1 | 13.71 | 14.90 | 1.19 | |||
Show | 36048 | 00 06 00 +45 49 20 | POP 217 YG | 2016 | 11 | 188 | 9.7 | 14.80 | 15.80 | 1.00 |
Precise pa | 253.9 |
Precise sep | 329.97 |
Constellation | Hydra |
SAO | 36046 |
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HIP | 473 |
Tycho2 | 3246-00874-1 |
HD | 38 |
ADS | 48 |
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GL | Gl 4A |
BD | BD+45 4408 |
Distance | 11.31 |
Distance ly | 36.89 |
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last precise pa | 253.9 |
last precise sep | 329.97 |
Period (P) | 830.37c | Periastron (T) | 26357y | Semi-major axis (a) | 205.1a | |||
Eccentricity (e) | 0.81 | Inclination (i) | 75.9° | Longitude of periastron (ω) | 345.6° | |||
Node (Ω) | 74.3° | Note | Grade | 5 | (1=Definitive, 9=Indet.) | |||
Equinox | Last observation |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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![]() Measures: green=micrometric, blue=interferometric, purple=photographic |
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coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
00057+4549 | STT 547 | AF | 2007 | 36 | 254 | 327.9 | 9.59 | 10.19 | K6 | N DV | 000541.03+454843.3 |
00057+4549 | STT 547 | AF | 2015 | 38 | 254 | 328.4 | 8.98 | 10.19 | K6V+M2e | NO V | 000541.03+454843.3 |
00057+4549 | STT 547 | AF | 2018 | 39 | 254 | 330.0 | 8.98 | 10.19 | K6V+M2e | NO V | 000541.03+454843.3 |