HR 8799 b (Q1334636)

First light of the VLT planet finder SPHERE

Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements

star

1 reference

imported from Wikimedia project

SIMBAD

unconfirmed exoplanet

1 reference

1 reference

Exoplanet Comparison HR 8799 b.png
1,040 × 480; 189 KB

1 reference

English Wikipedia

Wikimedia import URL

https://en.wikipedia.org/w/index.php?title=HR_8799_b&oldid=918607794

mass

7±4 Jupiter mass

1 reference

HD 218396b

Henry Draper Catalogue

1 reference

time of discovery or invention

SIMBAD

HR 8799b

catalog

Bright Star Catalogue

1 reference

TIC 245368902b

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13 November 2008

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imported from Wikimedia project

English Wikipedia

November 2008

1 reference

site of astronomical discovery

W. M. Keck Observatory

0 references

0 references

2 references

inferred from equatorial coordinates

constellation

Pegasus

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based on heuristic

parent astronomical body

3 references

object stated in reference as

HR 8799

object stated in reference as

HR 8799

orbital eccentricity

0.0

2 references

Orbital motion of HR 8799 b, c, d using Hubble space telescope data from 1998: constraints on inclination, eccentricity, and stability

orbital inclination

28.0 degree

1 reference

Orbital motion of HR 8799 b, c, d using Hubble space telescope data from 1998: constraints on inclination, eccentricity, and stability

38±7 degree

1 reference

Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements

30.27±4.95 degree

1 reference

First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR 8799 exoplanetary system

orbital period

164,250.0 day

1 reference

Orbital motion of HR 8799 b, c, d using Hubble space telescope data from 1998: constraints on inclination, eccentricity, and stability

171,667.5 day

1 reference

Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements

170,000 day

1 reference

166,510.17±9,021.68 day

1 reference

First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR 8799 exoplanetary system

semi-major axis of an orbit

70 astronomical unit

1 reference

Astrometric monitoring of the HR 8799 planets: orbit constraints from self-consistent measurements

67.96±1.85 astronomical unit

1 reference

First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR 8799 exoplanetary system

68 astronomical unit

2 references

Orbital motion of HR 8799 b, c, d using Hubble space telescope data from 1998: constraints on inclination, eccentricity, and stability

angular distance

1.725888 arcsecond

1 reference

Extrasolar Planets Encyclopaedia exoplanet ID

HR 8799 b

parallax

24.2175±0.0881 milliarcsecond

2 references

declination component of proper motion

−49.48±0.152 milliarcsecond per year

2 references

right ascension component of proper motion

108.301±0.168 milliarcsecond per year

2 references

1.2±0.1 Jupiter radius

1 reference

0.6 Jupiter radius

1 reference

First light of the VLT planet finder SPHERE

3 references