HD 17092

Orange-hued star in the constellation Perseus

HD 17092
Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Perseus
Right ascension	02^h 46^m 22.1179^s^[1]
Declination	+49° 39′ 11.0949″^[1]
Apparent magnitude (V)	7.73^[2]
Characteristics
Evolutionary stage	Giant^[2]
Spectral type	K0III^[3]
B−V color index	1.247±0.014^[4]
Astrometry

Radial velocity (R_v)	5.49±0.03^[5] km/s
Proper motion (μ)	RA: 40.328±0.100^[1] mas/yr Dec.: −10.312±0.099^[1] mas/yr
Parallax (π)	4.3499 ± 0.0516 mas^[1]
Distance	750 ± 9 ly (230 ± 3 pc)
Absolute magnitude (M_V)	+1.76^[4]

Details^[6]

Mass	1.23±0.18 `M`_☉
Radius	12.04+0.51 −0.35^[1] `R`_☉
Luminosity	57±1^[1] `L`_☉
Surface gravity (log g)	2.47±0.11 cgs
Temperature	4,630±30 K
Metallicity [Fe/H]	0.11±0.05 dex
Rotation	505 days^[4]
Rotational velocity (v sin i)	<1 km/s
Age	5.82±2.75 Gyr

Other designations
BD+49° 767, HD 17092, SAO 38313, PPM 45466
Database references
SIMBAD	data

HD 17092 is a star in the constellation of Perseus. It has an orange hue but is visible only with binoculars or better equipment, having an apparent visual magnitude of 7.73.^[2] The distance to this star is approximately 750 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +5.5 km/s.^[5]

This object is an aging giant star with a stellar classification of K0III,^[3] which means it has exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence.^[4] It is roughly six billion years old with 1.2^[6] times the mass of the Sun and has expanded to 12 times the Sun's radius.^[1] The star is radiating 57^[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,630 K.^[6]

Planetary system

On 6 May 2007, a planet HD 17092 b was discovered with the Hobby-Eberly Telescope by Niedzielski who used the wobble method. This planet is a massive gas giant and orbits at 1.29 astronomical units from the star with a period of about 360 days.^[4]

The HD 17092 planetary system^[4]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥4.6±0.3 M_J	1.29±0.05	359.9±2.4	0.166±0.052	—	—

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ ^a ^b ^c Maldonado, J.; et al. (April 2019), "Connecting substellar and stellar formation: the role of the host star's metallicity", Astronomy & Astrophysics, 624: 7, arXiv:1903.01141, Bibcode:2019A&A...624A..94M, doi:10.1051/0004-6361/201833827, S2CID 118934484, A94
^ ^a ^b Skiff, B. A. (October 2014), General Catalogue of Stellar Spectral Classifications, Bibcode:2014yCat....1.2023S
^ ^a ^b ^c ^d ^e ^f Niedzielski, A.; et al. (2007). "A Planetary‐Mass Companion to the K0 Giant HD 17092". The Astrophysical Journal. 669 (2): 1354–1358. arXiv:0705.0935. Bibcode:2007ApJ...669.1354N. doi:10.1086/521784. S2CID 14853462.
^ ^a ^b Deka-Szymankiewicz, B.; et al. (2018), "The Penn State - Toruń Centre for Astronomy Planet Search stars. IV. Dwarfs and the complete sample", Astronomy and Astrophysics, 615: A31, arXiv:1801.02899, Bibcode:2018A&A...615A..31D, doi:10.1051/0004-6361/201731696, S2CID 85526201
^ ^a ^b ^c Maldonado, J.; Villaver, E. (April 2016), "Evolved stars and the origin of abundance trends in planet hosts", Astronomy & Astrophysics, 588: 11, arXiv:1602.00835, Bibcode:2016A&A...588A..98M, doi:10.1051/0004-6361/201527883, S2CID 119212009, A98

Constellation of Perseus

Stars

Bayer	α (Mirfak) β (Algol) γ δ ε ζ η (Miram) θ ι κ (Misam) λ μ ν ξ (Menkib) ο (Atik) π ρ σ τ φ ψ ω b
Flamsteed	1 2 3 4 (g) 5 7 8 9 (i) 10 11 12 14 16 17 20 21 24 29 30 31 32 (l) 34 36 40 (o) 42 (n) 43 (A) 48 (c) 49 50 52 (f) 53 (d) 54 55 56 57 (m) 58 (e) 59 1 Aur
Variable	S T U V X Z RS RT RV RW RY ST SU SV TZ UV UX UY VX XX XY XZ YZ AB AG AR AS AW AX BM DM DY FO GK IK IP IQ IU IW IX IZ KP KS KT KW LX V351 V356 V357 V361 V376 V380 V386 V392 V396 V400 V423 V432 V440 V459 V461 V471 V472 V473 V480 V490 V492 V505 V509 V518 V520 (61 And) V521 V545 V551 V572 V573 V575 V576 V621 V718 V1024
HR	470 526 529 538 540 621 641 787 792 810 820 831 842 846 849 864 865 876 885 886 890 894 918 (k) 920 923 930 949 950 956 964 966 969 973 975 979 986 991 1001 1019 1034 1037 1041 1047 1051 1056 1059 1074 1097 1113 1127 1130 1133 1141 1160 1164 1176 1191 1197 1198 1207 1215 1226 1234 1286 1301 1330 1333 1337 1344 1371 1390 1419 1424 1482 1489 1493 1500 1514
HD	13519 14433 14434 16691 16760 17092 17245 17605 21684 22781 23301 23596 25329 26702 29587
Other	BD+31 643 BD+48 740 G 38-29 G 95-57 GD 61 HAT-P-15 (Berehynia) HAT-P-29 (Muspelheim) IRAS 04296+3429 L1448-IRS2E LkHα 101 LRLL 54361 NGC 1333 13 NGC 1333 IRAS 2A NGC 1333 IRAS 4A NGC 1333 IRAS 4B NGC 1624-2 PSR B0355+54 PSR J0357+3205 WR 4

Exoplanets	WASP-11b/HAT-P-10b

Star
clusters

NGC	869 (h) 884 (χ) 957 1039 1220 1285 1342 1444 1513 1528 1545 1624
Other	Alpha Persei Cluster IC 348 Trumpler 2

Nebulae

NGC	650 (Little Dumbbell Nebula) 1333 1491 1499 (California Nebula) 1579
Other	Barnard 203 Wreath Nebula

Galaxies

NGC	1003 1023 1058 1077 1160 1161 1167 1169 1250 1259 1260 1264 1265 1267 1268 1270 1271 1272 1273 1274 1275 1277 1278 1279 1281 1282 1283 1293 1294 1334
Other	IC 310 UGC 2885 (Godzilla galaxy) 4C +37.11