HAT-P-25

HAT-P-25 is a G-type main-sequence star about 990 light-years away. It has a very low flare activity.[3] The star is enriched in heavy elements, having about twice amount of metals compared to solar abundance.

HAT-P-25
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension  03h 10m 47.4136016557s[1]
Declination +25° 00′ 41.677262346″[1]
Apparent magnitude (V) 13.15[1]
Characteristics
Spectral type G5V
Astrometry
Proper motion (μ) RA: 13.49 mas/yr
Dec.: -13.586 mas/yr
Parallax (π)3.3009 ± 0.0466[1] mas
Distance990 ± 10 ly
(303 ± 4 pc)
Details[2]
Mass1.012+0.051
−0.051 M☉
Radius0.919±0.034 R☉
Surface gravity (log g)4.516+0.026
−0.025 cgs
Temperature5519+78
−76 K
Metallicity0.29±0.08
Age3.2±2.3 Gyr
Other designations
Gaia DR2 3668036348641580288, TYC 320-1027-1, GSC 0320-01027, 2MASS J14123753+0403359[1]
Database references
SIMBADdata

Planetary system

In 2010 a transiting hot Jupiter like planet was detected.[4] It has an equilibrium temperature of 1182±25 K.[2] The stability of orbits within circumstellar habitable zone is not significantly affected by the HAT-P-25b planet.[5]

Size comparison of HAT-P-25 b and Jupiter
The HAT-P-25 planetary system[4][2]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.569+0.023
−0.022 MJ		 0.0466±0.0005 3.65281514+0.00000076
−0.00000075		 0.023+0.022
−0.014		 87.6±0.5° 1.135±0.048 RJ
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gollark: Laptops now are very different to ye olden laptops, touchscreens... are generally better now, I guess, LCDs can go to crazy resolutions and refresh rates and are being replaced by OLEDs in some areas, "microprocessors" is so broad and ignores the huge amount of advancement there.
gollark: I mean, yes, we have those still, but they're very broad categories.
gollark: What "20-30 year old technology"?
gollark: M.2 is just a form factor, M.2 SSDs can use SATA or NVMe, NVMe is a newer PCIe-based protocol for SSDs which is faster but not really that significant for everyday use, you can use your existing SSD if your thing supports it.

References
  1. HAT-P-25 -- Star
  2. Transiting Exoplanet Monitoring Project (TEMP). IV. Refined System Parameters, Transit Timing Variations and Orbital Stability of the Transiting Planetary System HAT-P-25, 2018, arXiv:1805.01580
  3. Evgenya L. Shkolnik, "AN ULTRAVIOLET INVESTIGATION OF ACTIVITY ON EXOPLANET HOST STARS", 2013
  4. HAT-P-25b: a Hot-Jupiter Transiting a Moderately Faint G Star, 2010, arXiv:1008.3565
  5. Nikolaos Georgakarakos, Siegfried Eggl, and Ian Dobbs-Dixon, "Giant Planets: Good Neighbors for Habitable Worlds?", 2018


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