C/2007 VO53 Spacewatch
more info
An apparently asteroidal object was discovered at Mt. Lemmon on 11 January 2008 and next was identified by Timothy B. Spahr with observations made by the Spacewatch survey of an object designated C/2007 VO53. Later its cometary apperance was reported by several observers [IAUC 8911, 2008 January 18].
This comet made its closest approach to the Earth on 25 November 2009 (4.499 au), five months before perihelion.
Solution given here is based on data spanning over 4.7 yr in a range of heliocentric distances: 8.31 au – 4.843 au (perihelion) – 7.76 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.
This comet made its closest approach to the Earth on 25 November 2009 (4.499 au), five months before perihelion.
Solution given here is based on data spanning over 4.7 yr in a range of heliocentric distances: 8.31 au – 4.843 au (perihelion) – 7.76 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.
| solution description | ||
|---|---|---|
| number of observations | 712 | |
| data interval | 2007 10 20 – 2012 07 20 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 8.31 au – 4.84 au (perihelion) – 7.76 au | |
| detectability of NG effects in the comet's motion | NG effects not determinable | |
| type of model of motion | GR - gravitational orbit | |
| data weighting | YES | |
| number of residuals | 1396 | |
| RMS [arcseconds] | 0.43 | |
| orbit quality class | 1a+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2010 05 04 | |
| perihelion date | 2010 04 26.49930200 | ± 0.00019800 |
| perihelion distance [au] | 4.84262750 | ± 0.00000113 |
| eccentricity | 0.99972382 | ± 0.00000169 |
| argument of perihelion [°] | 75.029920 | ± 0.000023 |
| ascending node [°] | 59.736874 | ± 0.000007 |
| inclination [°] | 86.990322 | ± 0.000006 |
| recip semi-major axis [10-6 au-1] | 57.03 | ± 0.35 |
Time distribution of positional observations with corresponding heliocentric (red curve) and geocentric (green curve) distance at which they were taken. The horizontal dotted line shows the perihelion distance for a given comet whereas vertical dotted line — the moment of perihelion passage.