HD 278555 Overview
-
Star:
HD 278555
- Stellar Radius: 1.63 Solar Radius
- Stellar Effective Temperature: 6337.00 K
-
Planet:
HD 278555 b
- Disposition Confirmed
- Planet Radius 0.984 Jupiter Radius
HD 278555 Architecture & Discovery Information
| Name | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|
| HD 278555 | ||||||
| HD 278555 b | 28.84 d | 11.03 R⨁ | Transit | 2026 | Ball et al. 2026 | Confirmed Planet |
- RA
- 03h21m28.33s
- Dec
- +32d54m49.72s
- Distance
-
289.829+5.495-5.298pc
- Parallax
- 3.4229800±0.0637327 mas
- Ecliptic Latitude
- 13.96683 deg
- Ecliptic Longitude
- 56.50663 deg
- Galactic Latitude
- -20.17588 deg
- Galactic Longitude
- 155.92676 deg
- Total Proper Motion
- 24.3323301±0.0873696 mas/yr
- Proper Motion (RA)
- 15.9992000±0.0970508 mas/yr
- Proper Motion (Dec)
- -18.3327000±0.0792062 mas/yr
- Photometry
- mV 11.046±0.012
- mTESS 10.4525±0.0061
- mJ 9.814±0.020
- mH 9.580±0.019
- mKs 9.473±0.018
- mW1 9.461±0.022
- mW2 9.492±0.021
- mW3 9.467±0.041
- mW4 8.542
- mGaia 10.891700±0.000388
- mB 11.290±0.154
| Source | Ball et al. 2026 | TICv8 |
|---|---|---|
|
Teff
(K)
|
6047+93-95
|
6337.000+125.165-137.263
|
|
L✶
(log10(L⦿))
|
0.496+0.032-0.033
|
0.5879768+0.0260222-0.0257199
|
|
ρ✶
(g/cm3)
|
0.431±0.042 |
0.4062950+0.1245620-0.0655547
|
|
M✶
(M⦿)
|
1.255+0.075-0.073
|
1.254000+0.187606-0.187565
|
|
R✶
(R⦿)
|
1.624+0.052-0.050
|
1.6325800+0.0884648-0.0690729
|
|
log g
(log10(cm/s2))
|
4.132+0.031-0.037
|
4.1106200+0.1139070-0.0638636
|
|
Metallicity
(dex)
|
0.269+0.070-0.072
[Fe/H]
|
--- |
|
v sin i
(km/s)
|
9.21±0.36 | --- |
|
Age
(Gyr)
|
3.8+2.3-1.1
|
--- |
|
Sp. T
|
F8 | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity, Transit
| Source | Ball et al. 2026 |
|---|---|
|
Tp
(days)
|
2458797.1589+0.0020-0.0019
(BJD)
|
|
Teq
(K)
|
853±16 |
|
b
|
0.24±0.16 |
|
ω
(deg)
|
116.0+33.0-68.2
|
|
Mp
(M⨁)
|
267±32 |
|
Mp
(MJup)
|
0.84±0.10 |
|
e
|
0.0850+0.0470-0.0490
|
|
P
(days)
|
28.842438+0.000045-0.000046
|
|
ρ
(g/cm3)
|
1.09+0.19-0.17
|
|
Rp
(R⨁)
|
11.03+0.40-0.39
|
|
Rp
(RJup)
|
0.9840+0.0360-0.0350
|
|
K
(m/s)
|
48.3+5.4-5.5
|
|
a
(au)
|
0.1985+0.0039-0.0040
|
|
δ
(%)
|
0.4393+0.0093-0.0094
|
Nearby Data (within 30 arcseconds) Browse Nearby Data
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