Coord 2000 | 00174+0853 |
Discov num | A 1803 |
Comp | AB |
Coord arcsec 2000 | 00 17 24.50 +08 52 34.8 |
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Date first | 1908 |
Date last | 2008 |
Obs | 53 |
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Pa first | 300 |
Pa last | 307 |
P.A. Now (θ) | 197° |
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Sep first | 0.1 |
Sep last | 0.2 |
Sep. Now (ρ) | 0.02" |
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Mag pri | 8.38 |
Mag sec | 7.78 |
delta mag (ΔM) | 0.6 |
Spectral class | F7V (yellow-white) |
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Pri motion ra | +063 |
Sec motion ra | |||||||||
Pri motion dec | +061 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 38 Psc | 00 17 24 +08 52 35 | A 1803 AB | 2008 | 53 | 197 | 0.0 | 8.38 | 7.78 | 0.60 | Y | <=== | |
Show | 00 17 24 +08 52 35 | STF 22 AB,C | 2020 | 175 | 234 | 3.9 | 7.13 | 7.66 | 0.53 | ||||
Show | 00 17 24 +08 52 35 | STF 22 AB,D | 2005 | 10 | 151 | 66.8 | 7.13 | 11.50 | 4.37 | ||||
Show | 00 17 24 +08 52 35 | POP 229 AB,E | 2005 | 3 | 239 | 75.3 | 7.13 | 16.16 | 9.03 |
Precise pa | 307.2 |
Precise sep | 0.162 |
Name | 38 Hya |
Constellation | Hydra |
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HIP | 1392 |
Gaia DR2 | 2752315446728243328 |
HD | 1317 |
GC | 340 |
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ADS | 238 |
BD | BD+08 24 |
Flamsteed | 38 Hydrae |
Flamsteed name | 38 Hya |
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Distance | 15.19 |
Distance ly | 49.55 |
last precise pa | 307.2 |
last precise sep | 0.162 |
Period (P) | 35.66y | Periastron (T) | 1950.7y | Semi-major axis (a) | 0.189a | |||
Eccentricity (e) | 0.002 | Inclination (i) | 95.4° | Longitude of periastron (ω) | 282° | |||
Node (Ω) | 124.1° | Note | Grade | 2 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 2008 |
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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 |
00174+0853 | A 1803 | AB | 1998 | 51 | 300 | 0.1 | 8.38 | 7.78 | F7V | NOD | 001724.50+085234.8 |
00174+0853 | A 1803 | AB | 2008 | 52 | 307 | 0.2 | 8.38 | 7.78 | F7V | NOD | 001724.50+085234.8 |