HD 84117

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HD 84117
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Hydra
Right ascension	09^h 42^m 14.4168^s^[1]
Declination	−23° 54′ 56.048″^[1]
Apparent magnitude (V)	4.94^[1]
Characteristics
Spectral type	F8V^[1]
U−B color index	0.00^[2]
B−V color index	+0.53^[2]
R−I color index	+0.28^[2]
Astrometry

Radial velocity (R_v)	33.8 ± 0.9^[1] km/s
Proper motion (μ)	RA: −399.21^[1] mas/yr Dec.: 263.17^[1] mas/yr
Parallax (π)	67.19 ± 0.73^[1] mas
Distance	48.5 ± 0.5 ly (14.9 ± 0.2 pc)
Absolute magnitude (M_V)	4.08^[3]

Details

Mass	1.09 (1.04 to 1.16)^[4] M_☉
Radius	1.1^[5] R_☉
Temperature	6100^[4] K
Metallicity	[Fe/H] = −0.12^[4]
Rotational velocity (v sin i)	6^[4] km/s
Age	3.1 (2.2 to 4.4) × 10⁹^[4] years

Other designations
CD−23 8646, CPD−23 4656, GC 13394, GJ 364, HIP 47592, HR 3862, LTT 3558, NLTT 22406, PPM 256602, SAO 177866.^[1]
Database references
SIMBAD	data

HD 84117 is a F-type main sequence star in the constellation of Hydra.^[1] It has an apparent visual magnitude of approximately 4.94.^[1]

References

↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 LTT 3558 -- High proper-motion Star, database entry, SIMBAD. Accessed on line January 20, 2011.
↑ 2.0 2.1 2.2 HR 3862, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line January 20, 2011.
↑ From apparent magnitude and parallax.
↑ 4.0 4.1 4.2 4.3 4.4 HD 84117, database entry, The Geneva-Copenhagen Survey of Solar neighbourhood, J. Holmberg et al., 2007, CDS ID V/117A. Accessed on line January 20, 2011.
↑ HD 84117, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line January 20, 2011.

← Star systems within 45–50 light-years →

Star systems (including brown dwarf systems) within 45–50 light-years from Earth.

A
(White)

IV	Alpha Cephei «Alderamin» (48.8 ± 0.4 ly; 1 star)

V	Iota Ursae Majoris «Talitha Borealis» (47.7 ± 0.6 ly; 4 stars)

F V
(Yellow-white)

Tau¹ Eridani (45.6 ± 0.5 ly; 2 stars)
Alpha Fornacis «Dalim» (46.0 ± 0.4 ly; 2 stars)
Theta Boötis «Asellus Primus» (47.5 ± 0.4 ly; 2 stars)
111 Tauri (Gliese 201/202) (47.8 ± 0.7 ly; 2 stars)
Psi Capricorni «Yue» (47.9 ± 0.6 ly; 1 star)
Alpha Corvi «Alchiba» (48.2 ± 0.5 ly; 1 star)
HR 3862 (49.0 ± 0.2 ly; 1 star)
Eta Leporis (49.1 ± 0.5 ly; 1 star)
Nu Phoenicis (49.1 ± 0.5 ly; 1 star)
19 Draconis (49.2 ± 0.4 ly; 2 stars)

G
(Yellow)

IV	b (31) Aquilae (49.4 ± 0.6 ly; 3 stars)

V	18 Scorpii (45.7 ± 0.6 ly; 1 star) 47 Ursae Majoris (45.9 ± 0.4 ly; 1 star, 3 planets: b c d) 26 Draconis (45.9 ± 0.3 ly; 3 stars) Pi¹ Ursae Majoris (46.6 ± 0.5 ly; 1 star) Gliese 611 (46.9 ± 0.4 ly; 2 stars) 72 Herculis (46.9 ± 0.4 ly; 1 star) Nu² Lupi (47.5 ± 0.5 ly; 1 star, 3 planets: b c d) HR 7898 (47.8 ± 0.6 ly; 1 star) Psi Serpentis (47.9 ± 0.6 ly; 2 stars) 20 Leonis Minoris «Cor» (48.6 ± 0.6 ly; 1 star) HR 209 (48.7 ± 0.5 ly; 2 stars) HD 176051 (48.9 ± 0.4 ly; 2 stars, 1 planet: b) 171 G. Puppis (49.6 ± 0.4 ly; 2 stars) HR 5864 (49.7 ± 0.6 ly; 2 stars) Mu Arae (49.8 ± 0.6 ly; 1 star, 4 planets: d e b c)

K
(Orange)

IV	Eta Cephei «Al Agemim» (46.8 ± 0.3 ly; 1 star)

V	Gliese 898/897 (45.5 ± 0.9 ly; 4 stars) Gliese 532 (45.7 ± 0.6 ly; 1 star) HD 23356 (45.8 ± 0.6 ly; 1 star) Gliese 42 (45.9 ± 0.5 ly; 1 star) Gliese 726 (46.1 ± 0.8 ly; 1 star) Gliese 529 (46.3 ± 0.7 ly; 1 star) Gliese 282 (46.3 ± 0.6 ly; 2 stars) HR 7578 (46.4 ± 0.5 ly; 2 stars) Gliese 481 (46.6 ± 0.7 ly; 1 star) Gliese 613 (46.8 ± 0.6 ly; 1 star) HD 150689 (46.9 ± 0.7 ly; 1 star) Gliese 546 (47.0 ± 0.7 ly; 1 star) Gliese 259 (47.7 ± 0.5 ly; 1 star) OU Geminorum (47.8 ± 0.8 ly; 2 stars) Gliese 604 (47.8 ± 0.7 ly; 1 star) Gliese 420 (47.9 ± 0.8 ly; 2 stars) Gliese 833 (48.1 ± 0.6 ly; 1 star) Gliese 269 (48.2 ± 0.6 ly; 2 stars) Gliese 818 (48.4 ± 1.0 ly; 1 star) AB Doradus (48.7 ± 0.4 ly; 2 stars) Gliese 14 (48.9 ± 0.8 ly; 1 star) Gliese 52 (49.1 ± 0.9 ly; 1 star) Gliese 483 (49.1 ± 0.6 ly; 1 star) GJ 1279 (49.2 ± 0.7 ly; 1 star) Gliese 141 (49.3 ± 0.7 ly; 1 star) Gliese 40 (49.6 ± 1.1 ly; 2 stars)

M V (Red dwarf)	Gliese 400 (46.0 ± 1.6 ly; 2 stars) HIP 79431 (47.0+2.2 −2.0 ly; 1 star, 1 planet: b) CM Draconis (47.1 ± 1.8 ly; 2 stars, 0 (1?) planets: b?) GJ 1214 (47.5 ± 0.4 ly; 1 star, 1 planet: b) Gliese 123 (48.8 ± 1.3 ly; 1 star) Gliese 163 (48.9+1.4 −1.3 ly; 1 star, 3 (5?) planets: b e? c f? d) Gliese 317 (49.9 ± 0.4 ly; 1 star, 2 planets: b c)

Brown
dwarf

L	WISEP J004701.06+680352.1 (48.9* ± 16.3 ly; 1 brown dwarf)*

T	WISE 0323-6025 (~45.3 ly; 1 brown dwarf) WISE 0335+4310 (~45.7 ly; 1 brown dwarf) WISE 0723+3403 (~45.7 ly; 1 brown dwarf) WISE 0819-0335 (~46.0 ly; 1 brown dwarf) WISE 2209-2734 (~46.0 ly; 1 brown dwarf) WISE 2237+7228 (~46.0 ly; 1 brown dwarf) WISE 2344+1034 (~46.0 ly; 1 brown dwarf) WISE 0458+6434 (46.6+17.4 −9.9 ly; 2 brown dwarfs) WISE 0223-2932 (~47.0 ly; 1 brown dwarf) WISE 0500-1223 (~47.0 ly; 1 brown dwarf) WISE 1812+2721 (~47.0 ly; 1 brown dwarf) VHS J125804.89-441232.4 (47.1* ± 5.9 ly; 1 brown dwarf)* WISEPA J074457.15+562821.8 (~47.3 ly; 1 brown dwarf) WISE 1309-1600 (~47.3 ly; 1 brown dwarf) WISE 0040+0900 (~47.6 ly; 1 brown dwarf) WISE 1018-2445 (~47.6 ly; 1 brown dwarf) WISE 2018-7423 (~47.9 ly; 1 brown dwarf) WISE 0015-4615 (~48.6 ly; 1 brown dwarf) WISE 2343-7418 (~48.6 ly; 1 brown dwarf)

Free-floating
planet

Y	WISE 1828+2650 (46.6+11.6 −7.8 ly; 1 (2?) planets)

In left column are stellar classes of primary members of star systems. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems without known trigonometric parallax.

v t e Stars of Hydra

Bayer	α (Alphard) β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ σ τ¹ τ² υ¹ υ² φ¹ φ² φ³ χ¹ χ² ψ ω

Flamsteed	1 2 3 6 9 10 12 14 15 17 19 20 21 23 24 26 27 28 29 33 34 37 44 47 48 50 51 52 54 55 56 57 58 59 60 30 Mon

Variable	R S U V W X RT RW RX SX SZ TT TW VX VZ WZ AI AV CT DF EX EZ FG GK HQ HS II IL IY KU KZ LN LO LQ LR LV LX MO MX NS OY QT V335 V355 V406 V419 V478

HR	3212 3269 3271 3272 3285 3288 3295 3305 3338 3342 3374 3378 3383 3392 3411 3446 3458 3459 3478 3480 3486 3493 3526 3529 3538 3554 3557 3564 3578 3584 3590 3596 3636 3638 3649 3651 3653 3675 3687 3704 3714 3741 3749 3750 3758 3760 3762 3763 3767 3772 3785 3788 3794 3796 3801 3802 3805 3808 3810 3822 3848 3858 3862 3908 3919 3921 3923 3931 3963 3965 3977 3986 3988 3991 4005 4011 4055 4068 4071 4076 4117 4123 4130 4149 4152 4157 4158 4162 4172 4190 4214 4225 4251 4261 4282 4298 4302 4307 4328 4331 4334 4339 4346 4373 4445 4449 4458 4469 4473 4498 4503 4525 4542 4548 4553 4558 4565 4579 4612 4628 4651 4723 4735 4774 4803 4810 4839 4857 4860 4918 4978 5090 5097 5098 5120 5128 5166 5167 5197 5209 5228 5246 5265 5309 5314 5324 5356 5399 5565

HD	68667 72659 74156 74685 75098 75217 76027 76478 78614 79481 79994 82943 83352 86226 86264 88806 90156 97344 105113 106500 107869 117033 121758 125279

Gliese	Gliese 357 Gliese 433 Gliese 453 GJ 2066 GJ 3517 GJ 3634

Other	BD -3 2525 BD-22 3467 CE 315 EC 14026-2647 HAT-P-35 HAT-P-42 HE 1327-2326 IRC -20197 Kelu-1 LHS 2065 LHS 3003 2MASS 0835-08 2MASS 1114-2618 PSR B0820+02 PSR B0834+06 TWA 5 WASP-15 WASP-25 WASP-36

List

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