astro.wikisort.org - Comet

Comet C/1861 G1 (Thatcher) is a long-period comet with roughly a 415-year orbit that is expected to return around 2283. It was discovered by A. E. Thatcher. It is responsible for the April Lyrid meteor shower.[3] Carl Wilhelm Baeker also independently found this comet. The comet passed about 0.335 AU (50.1 million km; 31.1 million mi) from the Earth on 1861-May-05 and last came to perihelion (closest approach to the Sun) on 1861-Jun-03.[1]

C/1861 G1 (Thatcher)

Discovery
Discovered by	A. E. Thatcher
Discovery date	April 5, 1861
Alternative designations	1861 I
Orbital characteristics A
Epoch	JD 2400920.5 (May 25, 1861)
Orbit type	Long period comet
Aphelion	110 AU (beyond Eris)
Perihelion	0.9207 AU
Semi-major axis	55.6 AU
Eccentricity	0.983
Orbital period	415 a
Inclination	79.77°
Last perihelion	1861-Jun-03[1]
Next perihelion	2283 ±5[2]

C/1861 G1 is listed as a long-period "non-periodic comet" because it has not yet been observed at two perihelion passages. When it is seen to come back around 2283, it should receive the P/ designation.

The comet is the parent body of the April Lyrids meteor shower.

See also

• C/1861 J1 – Great comet of 1861
• 153P/Ikeya–Zhang – periodic comet with a 366-year orbit

References

External links

• Thatcher at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

---

[de] C/1861 G1 (Thatcher)

C/1861 G1 (Thatcher) ist ein Komet, der im Jahr 1861 mit dem bloßen Auge gesehen werden konnte. Er ist der Ursprung des Meteorstroms der Lyriden.

---

- [en] C/1861 G1 (Thatcher)

---

[es] C/1861 G1 (Thatcher)

El cometa C / 1861 G1 (Thatcher) es un cometa de período largo con una órbita de aproximadamente 415 años que se espera que regrese alrededor de 2283. Fue descubierto por A. E. Thatcher. Es responsable de la lluvia de meteoritos de las Líridas de abril.[1] Carl Wilhelm Baeker también encontró este cometa de forma independiente. El cometa pasó aproximadamente a 0.335 AU (50.1 millones de km; 31.1 millones de millas) de la Tierra el 5 de mayo de 1861 y llegó por última vez al perihelio (la aproximación más cercana al Sol) el 3 de junio de 1861.[2]

---

---