C/2002 VQ94 (LINEAR) explained

C/2002 VQ94 (LINEAR)
Discoverer:LINEAR
Designations:C/2011 H1
Epoch:2 September 2006
(JD 2453980.5)
Observation Arc:9.5 years
Orbit:Long period
Aphelion:~371 AU (inbound)
~364 AU (outbound)
Perihelion:6.7967 AU(q)
(outside of Jupiter's orbit)
Eccentricity:0.96405 (inbound)
0.96628 (near perihelion)
0.96336 (outbound)
Period:~2,597 yr (inbound)
~2,521 yr (outbound)
Inclination:70.516°
Earth Moid:6.44566 AU
Jupiter Moid:4.102 AU
M1:9.3
Last P:6 February 2006

C/2002 VQ94 (LINEAR) is a long period comet with a comet nucleus estimated to be in diameter. It was discovered on 11 November 2002 by LINEAR.[1] It only brightened to total apparent magnitude 15.7 because the perihelion point of 6.7AU was outside of the inner Solar System.

The comet has an observation arc of 9.5 years allowing a very good estimate of the inbound (original) and outbound (future) orbits. The orbit of a long-period comet is properly obtained when the osculating orbit is computed at an epoch after leaving the planetary region and is calculated with respect to the center of mass of the Solar System. Inbound JPL Horizons shows an epoch 1950 barycentric orbital period of 2,597 years with aphelion of 371 AU from the Sun. Outbound with an epoch of 2050 JPL Horizons shows a period of approximately 2,521 years and an aphelion distance of 364 AU.

Precovery images from October 2001 when the comet was 11.7abbr=unitNaNabbr=unit from the Sun are known. Cometary activity was first detected at the end of August 2003 when the comet was 8.8abbr=unitNaNabbr=unit from the Sun.

Even though they have a large nucleus, comets such as C/2002 VQ94 (≈100 km), 95P/Chiron (≈200 km), and C/2014 UN271 (≈150 km) do not become visible to the naked eye because they stay outside of the inner Solar System. The Comet of 1729 (≈100 km) was visible to the naked eye as it passed 4AU from the Sun. Comet Hale-Bopp (≈60 km) came within 1 AU of the Sun.

Notes and References

  1. Korsun . P. P. . Ivanova . O. V. . Afanasiev . V. L. . Cometary activity of distant object C/2002 VQ94 (LINEAR) . Astronomy & Astrophysics . December 2006 . 459 . 3 . 977–980 . 10.1051/0004-6361:20065967 . 17 June 2024.