HIP 81991 Overview
-
Star:
HIP 81991
- Stellar Radius: 2.82 Solar Radius
- Stellar Effective Temperature: 5100.00 K
-
Planet:
HIP 81991 b
- Disposition Confirmed
-
Star:
HIP 81988
- Stellar Radius: 0.70 Solar Radius
- Stellar Effective Temperature: 4545.58 K
HIP 81991 Architecture & Discovery Information
| Name | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|
| HIP 81991 | ||||||
| HIP 81991 b | 5860 d | 3019.37 M⨁ | Radial Velocity | 2026 | Van Zandt et al. 2026 | Confirmed Planet |
| HIP 81988 | ||||||
HIP 81988
- Co-moving stellar companion at 7150 AU noted in ref. (Van Zandt et al. 2026)
- Orbital period estimated from range provided in ref. (Van Zandt et al. 2026)
- RA
- 16h44m59.76s
- Dec
- +06d05m13.37s
- Distance
- 43.90160±0.07145 pc
- Parallax
- 22.7493000±0.0367945 mas
- Ecliptic Latitude
- 28.15317 deg
- Ecliptic Longitude
- 248.74017 deg
- Galactic Latitude
- 30.8106 deg
- Galactic Longitude
- 23.32875 deg
- Total Proper Motion
- 334.5304994±0.0568496 mas/yr
- Proper Motion (RA)
- -213.4240000±0.0588938 mas/yr
- Proper Motion (Dec)
- -257.6060000±0.0554028 mas/yr
- Photometry
- mV 6.56168±0.02300
- mTESS 5.7552±0.0060
- mJ 4.940±0.037
- mH 4.590±0.061
- mKs 4.380±0.021
- mW1 ---
- mW2 ---
- mW3 ---
- mW4 ---
- mGaia 6.3060600±0.0003169
- mB 7.434±0.020
- mg ---
- mi ---
- mr ---
- mu ---
- mz ---
| Source | Van Zandt et al. 2026 | TICv8 |
|---|---|---|
|
Teff
(K)
|
5100+40-70
|
5060.0±44.0 |
|
Metallicity
(dex)
|
-0.27±0.01 [Fe/H] | -0.20±0.03 [M/H] |
|
γ
(km/s)
|
-6.6±0.1 | --- |
|
v sin i
(km/s)
|
5.37 | --- |
|
M✶
(M⦿)
|
1.09+0.07-0.13
|
--- |
|
CAII LOG RHK
|
-5.19 | --- |
|
Sp. T
|
G8 V | --- |
|
R✶
(R⦿)
|
--- | 2.82111 |
- Status
- Confirmed Planet
- Detected By
- Imaging, Radial Velocity
- Tools
- Planetary Systems
| Source | Van Zandt et al. 2026 |
|---|---|
|
Mp
(M⨁)
|
3019+1716-699
|
|
Mp
(MJup)
|
9.50+5.40-2.20
|
|
P
(days)
|
5860±603 |
|
a
(au)
|
6.4+0.6-0.3
|
- RA
- 16h44m57.74s
- Dec
- +06d02m33.10s
- Distance
-
43.6944+0.0799-0.0796pc
- Parallax
- 22.8574000±0.0414649 mas
- Ecliptic Latitude
- 28.10791 deg
- Ecliptic Longitude
- 248.73809 deg
- Galactic Latitude
- 30.79705 deg
- Galactic Longitude
- 23.27842 deg
- Total Proper Motion
- 336.5845810±0.0597986 mas/yr
- Proper Motion (RA)
- -215.6530000±0.0613207 mas/yr
- Proper Motion (Dec)
- -258.4240000±0.0587154 mas/yr
- Photometry
- mV 10.31±0.03
- mTESS 9.2764±0.0060
- mJ 8.301±0.032
- mH 7.716±0.040
- mKs 7.639±0.029
- mW1 11.085±0.106
- mW2 10.965±0.085
- mW3 9.574±0.140
- mW4 8.655±0.488
- mGaia 9.93019±0.00032
- mB 11.314±0.022
- mg 14.1095000±0.0099087
- mi 12.8196000±0.0098917
- mr 12.9033000±0.0097774
- mu 15.5204000±0.0114412
- mz 11.9989000±0.0105662
HIP 81991 Nearby Data (within 30 arcseconds) Browse Nearby Data
+
- Known Objects
- 1 Confirmed Planets
- 1 2MASS Point Source Catalog
- Data Files
- 4 KELT Time Series
- 1 Associated Literature Data
HIP 81988 Nearby Data (within 30 arcseconds) Browse Nearby Data
+
- Known Objects
- 1 Confirmed Planets
- 1 2MASS Point Source Catalog
- Data Files
- 4 KELT Time Series
- 1 Associated Literature Data
- System
- Star
- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
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