C/2000 A1 Montani
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C/2000 A1 was discovered on 12 January 2000 by J. Montani on CCD images taken using the Spacewatch telescope at Kitt Peak as cometary object [IAUC 7346, 2000 January 14]. After preliminary orbit computations it was found that Spacewatch and LINEAR survey registered this object on pre-discovery images taken 8 and 7 days before.
This comet made its closest approach to the Earth on 20 January 2000 (8.809 au), 5.7 months before perihelion.
Solution given here is based on data spanning over 2.2 yr in a range of heliocentric distances: 9.80 au – 9.743 au (perihelion) – 10.3 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system.
See also Królikowska 2014 and Królikowska and Dybczyński 2017.
This comet made its closest approach to the Earth on 20 January 2000 (8.809 au), 5.7 months before perihelion.
Solution given here is based on data spanning over 2.2 yr in a range of heliocentric distances: 9.80 au – 9.743 au (perihelion) – 10.3 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system.
See also Królikowska 2014 and Królikowska and Dybczyński 2017.
| solution description | ||
|---|---|---|
| number of observations | 132 | |
| data interval | 2000 01 04 – 2002 03 20 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 9.8 au – 9.74 au (perihelion) – 10.3 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 | 264 | |
| RMS [arcseconds] | 0.45 | |
| orbit quality class | 1a | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 1686 10 29 | |
| perihelion date | 2000 07 15.20658400 | ± 0.01103800 |
| perihelion distance [au] | 9.74094723 | ± 0.00002930 |
| eccentricity | 0.99960423 | ± 0.00001927 |
| argument of perihelion [°] | 14.342181 | ± 0.000503 |
| ascending node [°] | 111.888001 | ± 0.000041 |
| inclination [°] | 24.55271 | ± 0.000049 |
| reciprocal semi-major axis [10-6 au-1] | 40.63 | ± 1.98 |
| file containing 5001 VCs swarm |
|---|
| 2000a1a2.bmi |
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.
Six 2D-projections of the 6D space of original swarm including 5001 VCs. Each density map is given in logarithmic scale presented on the right in the individual panel.