astro.wikisort.org - Comet

Comet Zhu–Balam (C/1997 L1) is a long-period comet first identified by David D. Balam on June 8, 1997 and originally photographed by Jin Zhu on June 3, 1997.[2][3] The comet is estimated at 10 kilometres in diameter[3] with a period of approximately 36,800 years.[1]

C/1997 L1 (Zhu-Balam)

Discovery
Discovered by	David D. Balam (June 8) and Jin Zhu (June 3)
Discovery date	June 3, 1997
Orbital characteristics A
Epoch	1997-Aug-22 (JD 2450682.5)
Aphelion	~2210 AU[1]
Perihelion	4.899 AU
Semi-major axis	~1100 AU[1]
Eccentricity	0.9979
Orbital period	36,800 years (approx.)[1]
Last perihelion	November 22, 1996

Given the orbital eccentricity of this object, different epochs can generate quite different heliocentric unperturbed two-body best-fit solutions to the aphelion distance (maximum distance) of this object. For objects at such high eccentricity, the Suns barycentric coordinates are more stable than heliocentric coordinates. Using JPL Horizons the barycentric orbital elements for epoch 2015-Jan-01 generate a semi-major axis of 1100 AU and a period of approximately 36,800 years.[1]

References

На других языках

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- [en] Comet Zhu–Balam

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[es] Cometa Zhu-Balam

El Cometa Zhu-Balam es un cometa no periódico identificado por David Balam el 8 de junio de 1997 aunque había sido fotografiado por Gin Zhu el 3 de junio de 1997. El cometa tiene un diámetro estimado en 10 kilómetros con un período de aproximadamente 66.000 años. La distancia estimada al sol es de 24.920176 UA (unidades astronómicas). Ante la relativa lejanía y el período tan extenso, es difícil aventurar aún su próximo perihelio.

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