HD 27894 Overview
HD 27894
0.85
R⦿
4875.00
K
HD 27894 b
HD 27894 c
HD 27894 d
- Architecture
- HD 27894
- HD 27894
Discovery Data
| Host | Planet | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|---|
| HD 27894 | HD 27894 b | 18.02 d | > 196.74 M⨁ | Radial Velocity | 2005 | Moutou et al. 2005 | Confirmed Planet |
| HD 27894 | HD 27894 c | 36.07 d | > 51.49 M⨁ | Radial Velocity | 2017 | Trifonov et al. 2017 | Confirmed Planet |
| HD 27894 | HD 27894 d | 5019.54 d | 2063.66 M⨁ | Radial Velocity | 2017 | Trifonov et al. 2017 | Confirmed Planet |
HD 27894
- Stellar mass selected from evolutionary track mass (M_track) in Table 4 (Ghezzi et al. 2010)
- RA
- 04h20m47.42s
- Dec
- -59d24m34.84s
- Distance
-
43.8214+0.0593-0.0591pc
- Parallax
- 22.7910000±0.0306041 mas
- Ecliptic Latitude
- -76.79263 deg
- Ecliptic Longitude
- 20.87252 deg
- Galactic Latitude
- -42.00943 deg
- Galactic Longitude
- 270.09987 deg
- Total Proper Motion
- 325.7145651±0.0763298 mas/yr
- Proper Motion (RA)
- 182.3130000±0.0532681 mas/yr
- Proper Motion (Dec)
- 269.9110000±0.0847928 mas/yr
- Photometry
-
mV9.36±0.03
-
mTESS8.4643±0.0060
-
mJ7.639±0.019
-
mH7.174±0.027
-
mKs7.071±0.026
-
mW16.935±0.053
-
mW27.083±0.020
-
mW37.049±0.015
-
mW46.988±0.053
-
mGaia9.065730±0.000244
-
mB10.313±0.022
-
Abundances
(Hypatia Catalog) -
[Fe/H] 0.31±0.16 dex
-
[C/H] 0.31±0.08 dex
-
[O/H] 0.22±0.09 dex
-
[Na/H] 0.35±0.14 dex
-
[Mg/H] 0.31±0.16 dex
-
[Al/H] 0.42±0.10 dex
-
[Si/H] 0.28±0.08 dex
-
[Ca/H] 0.35±0.14 dex
-
[BaII/H] 0.30±0.02 dex
| Source | An et al. 2025 | An et al. 2025 | Feng et al. 2022 | TICv8 | Gaia DR2 | Trifonov et al. 2017 | Suárez-Andrés et al. 2016 | Kürster et al. 2015 | Tsantaki et al. 2014 | Ghezzi et al. 2010 | Sousa et al. 2008 | Moutou et al. 2005 | Michigan Catalog, Vol. 1 | Cannon & Pickering 1918 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Teff
(K)
|
--- | --- | --- |
4912.1700+129.2530-93.4446
|
4829.940+66.115-39.940
|
--- | 4833 | --- | 4894±25 | 4832±85 | 4952±105 | 4875±81 | --- | --- |
|
L✶
(log10(L⦿))
|
--- | --- | --- |
-0.4193195+0.0122616-0.0126044
|
-0.40903563+0.00093258-0.00093456
|
--- | --- | --- | --- | -0.449±0.069 |
-0.474+0.041-0.045
|
-0.449 | --- | --- |
|
Metallicity
(dex)
|
--- | --- | --- | 0.3222280±0.0303542 [M/H] | --- | 0.30±0.07 [Fe/H] | 0.070±0.130 [N/H] | --- | 0.18±0.03 [Fe/H] | 0.21±0.03 [Fe/H] | 0.20±0.08 [Fe/H] | 0.30±0.07 [Fe/H] | --- | --- |
|
γ
(km/s)
|
--- | --- | --- | --- | 82.69463773429246±0.31753239715226 | --- | --- | 82.90033±0.00057 | --- | --- | --- | 82.9023±0.0003 | --- | --- |
|
v sin i
(km/s)
|
--- | --- | --- | --- | --- | --- | --- | --- | 0.87 | --- | --- | <1.5 | --- | --- |
|
Age
(Gyr)
|
--- | --- | --- | --- | --- | --- | --- | --- | --- | >13.0±1.0 | --- | 3.9 | --- | --- |
|
M✶
(M⦿)
|
0.873±0.039 |
0.871+0.040-0.039
|
0.810±0.096 |
0.8100000+0.1133100-0.0793599
|
--- | 0.8 | --- | --- | --- | 0.80±0.10 | 0.716 | 0.8 | --- | --- |
|
log g
(log10(cm/s2))
|
--- | --- | --- |
4.4856600+0.0549279-0.1098310
|
--- | --- | 4.3 | --- | 4.08±0.09 | 4.02±0.16 | 4.39±0.20 | 4.22±0.26 | --- | --- |
|
Sp. T
|
--- | --- | --- | --- | --- | K2 V | --- | --- | --- | --- | --- | K2 V | K2 V | K2 |
|
R✶
(R⦿)
|
--- | --- | --- |
0.8520130+0.0460241-0.0558553
|
0.89176697+0.01493350-0.02392180
|
--- | --- | --- | --- | 0.85±0.08 | --- | --- | --- | --- |
|
Prot
(days)
|
--- | --- | --- | --- | --- | 44 | --- | --- | --- | --- | --- | --- | --- | --- |
|
ρ✶
(g/cm3)
|
--- | --- | --- |
1.8463367+0.4512107-0.4090315
|
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Astrometry, Radial Velocity
- Tools
- Planetary Systems
| Source | Feng et al. 2022 | An et al. 2025 | Trifonov et al. 2017 | Kürster et al. 2015 | Moutou et al. 2005 |
|---|---|---|---|---|---|
|
Tp
(days)
|
2452934.108+0.539-0.722
(BJD)
|
--- | --- |
2452933.64±0.55
(BJD)
|
2453275.46±0.48 |
|
ω
(deg)
|
156.983+10.739-15.134
|
--- |
132.2+2.8-15.2
|
132±11 | 132.9±9.7 |
|
Mp sin i
(M⨁)
|
197±16 | 214±7 |
211+3-2
|
205 | 197.05 |
|
Mp sin i
(MJup)
|
0.619±0.050 | 0.674±0.021 |
0.665+0.009-0.007
|
0.645 | 0.62 |
|
e
|
0.0470+0.0120-0.0110
|
0.0334+0.0088-0.0091
|
0.047+0.012-0.008
|
0.0486±0.0086 | 0.049±0.008 |
|
P
(days)
|
18.01939+0.00024-0.00027
|
18.01947±0.00019 |
18.02+0.01-0.02
|
17.9904±0.0077 | 17.991±0.007 |
|
K
(m/s)
|
55.265+0.830-0.644
|
--- |
59.80+0.80-0.59
|
58.13±0.50 | 58.1±0.5 |
|
a
(au)
|
0.125±0.005 |
0.1286+0.0019-0.0020
|
0.1250±0.0001 | 0.125 | 0.122 |
|
i
(deg)
|
--- |
89.0+37.0-39.0
|
--- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity
- Tools
- Planetary Systems
| Source | Trifonov et al. 2017 |
|---|---|
|
ω
(deg)
|
44.2+11.0-7.5
|
|
Mp sin i
(M⨁)
|
51.5+3.5-12.7
|
|
Mp sin i
(MJup)
|
0.162+0.011-0.040
|
|
e
|
0.015+0.020-0.002
|
|
P
(days)
|
36.07+0.26-0.09
|
|
K
(m/s)
|
11.57+0.79-2.89
|
|
a
(au)
|
0.198±0.001 |
- Status
- Confirmed Planet
- Detected By
- Astrometry, Radial Velocity
- Tools
- Planetary Systems
| Source | Feng et al. 2022 | An et al. 2025 | Trifonov et al. 2017 |
|---|---|---|---|
|
ω
(deg)
|
334.378+4.024-3.713
|
--- |
353.9+12.3-3.1
|
|
Mp sin i
(M⨁)
|
--- | --- |
1721+76-386
|
|
Mp sin i
(MJup)
|
--- | --- |
5.415+0.239-1.214
|
|
e
|
0.343+0.031-0.026
|
0.3239+0.0092-0.0089
|
0.389+0.087-0.030
|
|
P
(days)
|
5019.54244+32.59359-31.12557
|
5045.2±18.6 |
5174+171-82
|
|
K
(m/s)
|
92.016+1.687-1.627
|
--- |
79.76+2.62-15.03
|
|
a
(au)
|
5.362+0.206-0.223
|
5.514±0.084 |
5.448+0.119-0.058
|
|
Tp
(days)
|
2447991.499+44.386-40.061
(BJD)
|
--- | --- |
|
Mp
(M⨁)
|
2064+314-112
|
2409+191-178
|
--- |
|
Mp
(MJup)
|
6.493+0.987-0.353
|
7.58+0.60-0.56
|
--- |
|
i
(deg)
|
101.524+14.742-31.503
|
117.8+6.9-11.0
|
--- |
Literature Time Series
(2 File Types, 2 Files)
| File Type | Data Points | Filter | Reference |
|---|---|---|---|
| Photometric Light Curve | 102 | Hp (Hipparcos) | Hipparcos and Tycho Catalogs |
| Radial Velocity Curve | 20 | Optical Spectra | Moutou et al. 2005 |
- Known Objects
- 3 Confirmed Planets
- 3 2MASS Point Source Catalog
- Data Files
- 3 Associated Literature Data
-
Orbits and Masses for 156 Companions from Combined Astrometry and Radial Velocities, and a Validation of Gaia Non-single-star Solutions
An et al. 2025 | Reference Overview -
3D Selection of 167 Substellar Companions to Nearby Stars
Feng et al. 2022 | Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 | Reference Overview -
Gaia Data Release 2
Gaia DR2 | Reference Overview -
Three planets around HD 27894. A close-in pair with a 2:1 period ratio and an eccentric Jovian planet at 5.4 AU
Trifonov et al. 2017 | Reference Overview -
CNO behaviour in planet-harbouring stars. I. Nitrogen abundances in stars with planets
Suárez-Andrés et al. 2016 | Reference Overview -
Disentangling 2:1 resonant radial velocity orbits from eccentric ones and a case study for HD 27894
Kürster et al. 2015 | Reference Overview -
Spectroscopic parameters for solar-type stars with moderate-to-high rotation. New parameters for ten planet hosts
Tsantaki et al. 2014 | Reference Overview -
All WISE Data Release
Cutri et al. 2014 | Reference Overview -
Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity
Ghezzi et al. 2010 | Reference Overview -
Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
Sousa et al. 2008 | Reference Overview -
The HARPS search for southern extra-solar planets. IV. Three close in planets around HD 2638, HD 27894, HD 63454
Moutou et al. 2005 | Reference Overview -
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog | Reference Overview -
The Hipparcos and Tycho Photometric System Passbands
Tycho 2 converted using Bessell 2000 | Reference Overview -
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog | Reference Overview -
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs | Reference Overview -
Michigan Catalog of two-dimensional spectral types for the HD stars, Vol 1
Michigan Catalog, Vol. 1 | Reference Overview -
The Henry Draper catalogue 0h, 1h, 2h, and 3h
Cannon & Pickering 1918 | Reference Overview
- System
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- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
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- Time Series
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