HD 207897 Overview
HD 207897
0.78
R⦿
5106.00
K
HD 207897 b
0.209
RJup
- Architecture
- HD 207897
- HD 207897
- Other Data
- Bibliography 13
- Nearby Data 4
Discovery Data
| Host | Planet | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|
| HD 207897 | HD 207897 b | Transit | 2021 | Heidari et al. 2022 | Confirmed Planet |
- RA
- 21h40m48.39s
- Dec
- +84d20m01.54s
- Distance
- 28.2938±0.0312 pc
- Parallax
- 35.3146000±0.0386907 mas
- Ecliptic Latitude
- 69.29488 deg
- Ecliptic Longitude
- 76.73933 deg
- Galactic Latitude
- 23.23912 deg
- Galactic Longitude
- 118.37663 deg
- Total Proper Motion
- 350.8880129±0.0672542 mas/yr
- Proper Motion (RA)
- 345.1780000±0.0671537 mas/yr
- Proper Motion (Dec)
- 63.0440000±0.0701998 mas/yr
- Photometry
-
mV8.37±0.03
-
mTESS7.5825±0.0060
-
mJ6.830±0.023
-
mH6.391±0.034
-
mKs6.312±0.026
-
mGaia8.130370±0.000357
-
mB9.264±0.026
-
Abundances
(Hypatia Catalog) -
[Fe/H] -0.09±0.04 dex
-
[C/H] -0.10±0.09 dex
-
[O/H] -0.13±0.09 dex
-
[Na/H] -0.23±0.04 dex
-
[Mg/H] -0.08±0.07 dex
-
[Al/H] -0.17±0.06 dex
-
[Si/H] -0.07±0.05 dex
-
[Ca/H] -0.06±0.06 dex
-
[Y/H] -0.05±0.08 dex
-
| Source | MacDougall et al. 2023 | Heidari et al. 2022 | TICv8 | Turnbull 2015 | Wright et al. 2004 | Cannon & Pickering 1918 | ExoFOP-TESS TOI | Show Candidate Solutions >> | << Hide Candidate Solutions |
|---|---|---|---|---|---|---|---|---|---|
|
Teff
(K)
|
5106+67-63
|
5070+60-57
|
5071.000+158.714-123.939
|
5132 | --- | --- | 5071.0±141.3 | ||
|
L✶
(log10(L⦿))
|
-0.421+0.043-0.041
|
-0.444+0.022-0.017
|
-0.4403654+0.0143488-0.0103744
|
-0.444 +0.067-0.079
|
--- | --- | --- | ||
|
Metallicity
(dex)
|
-0.030+0.060-0.059
[Fe/H]
|
-0.042+0.038-0.041
[Fe/H]
|
-0.070±0.100 [M/H] | --- | --- | --- | --- | ||
|
Age
(Gyr)
|
4.7+5.1-3.2
|
7.10±4.50 | --- | --- | --- | --- | --- | ||
|
ρ✶
(g/cm3)
|
2.3804+0.2456-0.3098
|
2.39+0.19-0.18
|
2.521954+0.661681-0.710644
|
--- | --- | --- | --- | ||
|
M✶
(M⦿)
|
0.8208+0.0226-0.0253
|
0.800+0.036-0.030
|
0.850000+0.105276-0.105328
|
0.77 | --- | --- | --- | ||
|
R✶
(R⦿)
|
0.7827+0.0329-0.0264
|
0.779+0.019-0.018
|
0.7803380+0.0631844-0.0437955
|
0.76 | --- | --- | 0.78±0.05 | ||
|
log g
(log10(cm/s2))
|
4.562+0.030-0.043
|
4.559+0.026-0.025
|
4.5829200+0.0854353-0.1017840
|
--- | --- | --- | 4.58±0.09 | ||
|
Sp. T
|
--- | K0 V | --- | K0 | --- | K0 | --- | ||
|
v sin i
(km/s)
|
--- | <2 | --- | --- | --- | --- | --- | ||
|
CAII LOG RHK
|
--- | -4.83±0.10 | --- | --- | -4.79 | --- | --- | ||
|
Prot
(days)
|
--- | 37±7 | --- | --- | --- | --- | --- | ||
|
S Index
|
--- | --- | --- | --- | 0.251±0.033 | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity, Transit
| Source | Polanski et al. 2024 | Heidari et al. 2022 | ExoFOP-TESS TOI | Show Candidate Solutions >> | << Hide Candidate Solutions |
|---|---|---|---|---|---|
|
a/R✶
|
--- |
32.13+0.85-0.82
|
--- | ||
|
Tp
(days)
|
--- |
2458917.0+4.5-5.4
|
--- | ||
|
Teq
(K)
|
581.745441829567+14.652278337348-12.554197752789
|
632.2+8.1-7.0
|
543 | ||
|
b
|
0.424372324311918+0.224908040473222-0.287319443867161
|
0.709+0.043-0.042
|
--- | ||
|
S
(S⨁)
|
--- |
26.5+1.4-1.2
|
14.4646 | ||
|
ω
(deg)
|
90 | -100±110 | --- | ||
|
Mp
(M⨁)
|
14.8+1.5-1.4
|
14.4±1.6 | --- | ||
|
Mp
(MJup)
|
0.0466+0.0047-0.0044
|
0.0453±0.0050 | --- | ||
|
Mp sin i
(M⨁)
|
--- | 14.4±1.6 | --- | ||
|
Mp sin i
(MJup)
|
--- | 0.0453±0.0050 | --- | ||
|
e
|
0 |
0.0470+0.0570-0.0330
|
--- | ||
|
i
(deg)
|
--- | 88.757±0.067 | --- | ||
|
P
(days)
|
16.201660±0.000016 |
16.202159+0.000085-0.000083
|
16.2017137±0.0000168 | ||
|
ρ
(g/cm3)
|
6.29+1.32-1.78
|
5.05+0.77-0.69
|
--- | ||
|
Rp
(R⨁)
|
2.34302132033229+0.12364599815899-0.09173372920954
|
2.501+0.082-0.078
|
2.359400±0.165133 | ||
|
Rp
(RJup)
|
0.209030721261951+0.011030976095712-0.008183949251473
|
0.2231+0.0073-0.0070
|
0.2104919±0.0147322 | ||
|
Rp/R✶
|
0.0274443624499376+0.0008733494202665-0.0005441752040736
|
0.02943+0.00049-0.00046
|
--- | ||
|
K
(m/s)
|
4.26±0.38 |
4.24+0.45-0.46
|
--- | ||
|
a
(au)
|
0.117±0.002 |
0.1163+0.0017-0.0015
|
--- | ||
|
δ
(%)
|
--- |
0.0866+0.0029-0.0027
|
0.09010000±0.00213604 | ||
|
T14
(hours)
|
2.90484219322711+0.03489720769478-0.02584092054009
|
2.911+0.034-0.031
|
2.696±0.316 | ||
|
TC
(days)
|
2458796.49559±0.00067 |
2458926.10942+0.00047-0.00048
|
2460449.0679020±0.0009621 |
Literature Stellar Spectra
(1 File)
| File Type | Spectrum Type | Wavelength Category | Reference |
|---|---|---|---|
| Spectra | echelle grating | Optical | California Planet Search |
Literature Time Series
(1 File Type, 1 File)
| File Type | Data Points | Filter | Reference |
|---|---|---|---|
| Photometric Light Curve | 133 | Hp (Hipparcos) | Hipparcos and Tycho Catalogs |
- Known Objects
- 1 Confirmed Planets
- 3 2MASS Point Source Catalog
- Data Files
- 1 Associated Literature Data
-
The TESS-Keck Survey. XX. 15 New TESS Planets and a Uniform RV Analysis of All Survey Targets
Polanski et al. 2024 | Reference Overview -
The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars
MacDougall et al. 2023 | Reference Overview -
HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star
Heidari et al. 2022 | Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 | Reference Overview -
ExoFOP-TESS TOI Table
ExoFOP-TESS TOI -
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 | Reference Overview -
CPS
California Planet Search -
Chromospheric Ca II Emission in Nearby F, G, K, and M Stars
Wright et al. 2004 | Reference Overview -
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog | Reference Overview -
Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)
van Altena et al. 2001 | 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 -
The Henry Draper catalogue 0h, 1h, 2h, and 3h
Cannon & Pickering 1918 | Reference Overview
- System
- Star
- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
- External Link
- Search
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