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Stellar HostProfile

HR 8799

A5 โ€ข 41.24 pc

Records

8

literature rows

Planets

4

system count

References

9

distinct source labels

HD: HD 218396HIP: HIP 114189TIC: TIC 245368902

Approximate color

from effective temperature

Canonical Summary

Adopted host values from all rows

Numeric fields use the median of non-null measurements. Disagreement stays visible through ranges, counts, and provenance.

Temperature

7357.8 K

7204.6 to 7400

4 values โ€ข 4 distinct

Mass

1.51 Msun

1.50 to 1.61

3 values โ€ข 3 distinct

Radius

1.47 Rsun

1.44 to 1.49

2 values โ€ข 2 distinct

Age

0.04 Gyr

0.03 to 0.06

2 values โ€ข 2 distinct

Luminosity

0.73 log(Lsun)

0.69 to 0.74

3 values โ€ข 3 distinct

Distance

41.24 pc

single adopted value

8 values โ€ข 1 distinct

Spectral Type

A5

Multiple classifications reported

A5 (2), A5 V (1), F0+ V ({lambda} Boo)... (1)

Planets

4

Stable across source rows

4

Scale Comparison

Radius against the Sun

Current adopted radius: 1.47 Rโ˜‰ โ€ข circles scaled linearly by radius

Sun

1.0 Rโ˜‰ baseline

HR 8799

1.47 Rโ˜‰

System Layout

Known planets

4 planets linked to this host

HR 8799 e

Imaging

โ—Œ

Discovery

2010

Period

2.08e4 days

Radius

โ€”

Mass

โ€”

Eq. Temp

โ€”

HR 8799 b

Imaging

โ—Œ

Discovery

2008

Period

1.72e5 days

Radius

โ€”

Mass

โ€”

Eq. Temp

โ€”

HR 8799 c

Imaging

โ—Œ

Discovery

2008

Period

8.33e4 days

Radius

โ€”

Mass

โ€”

Eq. Temp

โ€”

HR 8799 d

Imaging

โ—Œ

Discovery

2008

Period

โ€”

Radius

10.09 RโŠ•

Mass

โ€”

Eq. Temp

1300 K

Provenance

Underlying measurements and references

Evidence Summary

Rows

8

Stellar refs

8

System refs

1

Distancestable

8 values โ€ข 1 distinct

Parallaxstable

8 values โ€ข 1 distinct

Temperaturedisputed

4 values โ€ข 4 distinct

Massdisputed

3 values โ€ข 3 distinct

Radiusdisputed

2 values โ€ข 2 distinct

Agedisputed

2 values โ€ข 2 distinct

Luminositydisputed

3 values โ€ข 3 distinct

Surface Gravitydisputed

3 values โ€ข 3 distinct

Metallicitydisputed

3 values โ€ข 3 distinct

Spectral Typedisputed

4 values โ€ข 3 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
โ€”1.51โ€”โ€”โ€”โ€”41.24Zurlo et al. 2016TICv8
7204.61.611.49โ€”0.73โ€”41.24TICv8TICv8
โ€”โ€”โ€”โ€”โ€”F0+ V ({lambda} Boo)...41.24Gray et al. 2003TICv8
โ€”โ€”โ€”โ€”โ€”A541.24Cannon & Pickering 1918TICv8
7400โ€”โ€”0.03โ€”A541.24Gravity Collaboration et al. 2019TICv8
7339โ€”โ€”โ€”โ€”โ€”41.24Swastik et al. 2021TICv8
7376.7โ€”1.44โ€”0.74โ€”41.24Gaia DR2TICv8
โ€”1.50โ€”0.060.69A5 V41.24Marois et al. 2008TICv8