HD 7977
Star in the constellation Cassiopeia
HD 7977 is a G-type main-sequence star located in the constellation of Cassiopeia, around 246.9 light-years away from Earth. HD 7977 is notable for its uncertain close flyby of the Solar System 2.47 million years ago, when it is predicted to have come as close as 3,800 astronomical units or less, although there are reasons to doubt the proper motions used to compute this flyby.
Nº Q93480827 ★
Common · Knowledge
HD 7977
Star in the constellation Cassiopeia
HD 7977 is a G-type main-sequence star located in the constellation of Cassiopeia, around 246.9 light-years away from Earth. HD 7977 is notable for its uncertain close flyby of the Solar System 2.47 million years ago, when it is predicted to have come as close as 3,800 astronomical units or less, although there are reasons to doubt the proper motions used to compute this flyby.
Last price
—
Floor price
—
7-day median
—
30-day sales
0
30-day range
—
In circulation
0
Price history
median
low – high
sales
No sales in this period
Show table
| Date | median | Low | High | sales |
|---|
Sales history
- Last sale
- —
- 30-day average
- —
- 30-day low
- —
- 30-day high
- —
- Sales 7d
- 0
- Sales 30d
- 0
No sales yet.
Anonymous sales: no buyer or seller shown. Figures count player-to-player sales only.
From Wikipedia
HD 7977 is a G-type main-sequence star located in the constellation of Cassiopeia, around 246.9 light-years away from Earth. HD 7977 is notable for its uncertain close flyby of the Solar System 2.47 million years ago, when it is predicted to have come as close as 3,800 astronomical units or less, although there are reasons to doubt the proper motions used to compute this flyby. For comparison, Proxima Centauri is roughly 270,000 astronomical units from Earth. Its flyby may have taken it close enough to the Sun that it penetrated deep into the Oort Cloud and disturbed the population of Oort Cloud bodies and long-period comets there. Its mass is equivalent to 1.07 times the Sun's mass.
Text: Wikipédia, CC BY-SA 4.0. ·
Related cards
Proxima Centauri c
Unconfirmed exoplanet, super-Earth, or mini-Neptune
Nº Q65149906 ★★
Rho Cassiopeiae
Star in the constellation Cassiopeia
Nº Q13604 ★★
Ross 248
Variable star in the constellation Andromeda
Nº Q749072 ★★
NGC 6946
Spiral galaxy in the constellation Cepheus
Nº Q671210 ★★
Gamma Cephei
Star in the constellation of Cephei
Nº Q13265 ★
IC 1396
Open cluster
Nº Q1475104 ★★