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Stellar HostProfile

BD+20 2457

K2 II • 1539.7 pc

Records

5

literature rows

Planets

2

system count

References

6

distinct source labels

TIC: TIC 95359428

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

4259 K

4137 to 4329.9

5 values • 4 distinct

Mass

2.80 Msun

1.06 to 10.83

3 values • 3 distinct

Radius

47.52 Rsun

43.02 to 71.02

4 values • 4 distinct

Luminosity

2.97 log(Lsun)

2.77 to 3.17

2 values • 2 distinct

Distance

1539.7 pc

single adopted value

5 values • 1 distinct

Spectral Type

K2 II

Consistent across records

K2 II (1)

Planets

2

Stable across source rows

2

System Layout

Known planets

2 planets linked to this host

BD+20 2457 b

Radial Velocity

Discovery

2009

Period

379.6 days

Radius

Mass

1.77e4 M⊕

Eq. Temp

BD+20 2457 c

Radial Velocity

Discovery

2009

Period

622.0 days

Radius

Mass

3963.2 M⊕

Eq. Temp

Provenance

Underlying measurements and references

Evidence Summary

Rows

5

Stellar refs

5

System refs

1

Distancestable

5 values • 1 distinct

Parallaxstable

5 values • 1 distinct

Temperaturedisputed

5 values • 4 distinct

Massdisputed

3 values • 3 distinct

Radiusdisputed

4 values • 4 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

3 values • 2 distinct

Metallicitydisputed

4 values • 3 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
4182.046.051539.7TICv8TICv8
42591.061539.7Mortier et al. 2013TICv8
4329.943.022.771539.7Gaia DR2TICv8
425910.8371.021539.7Stassun et al. 2017TICv8
41372.80493.17K2 II1539.7Niedzielski et al. 2009TICv8