C/2021 O3 PanSTARRS
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Comet C/2021 O3 was discovered on 26 July 2021 with the Pan-STARRS 1 telescope (Haleakala), that is about nine months before its perihelion passage. it was followed until 12 July 2022.
Comet had its closest approach to the Earth on 8 May 2022 (0.601 au), about 17 days after its perihelion passage. At that moment it was already partially disintegrated.
Because comet started to disintegrate just before perihelion the preferred GR solution given here is based on preperihelion data span over 0.521 yr in a range of heliocentric distances from 4.31 au to 1.78 au.
This was Oort spike comet with original semimajor axis of about 30,000-31,000 au.
See also: Evangelista-Santana et all (2023)
Comet had its closest approach to the Earth on 8 May 2022 (0.601 au), about 17 days after its perihelion passage. At that moment it was already partially disintegrated.
Because comet started to disintegrate just before perihelion the preferred GR solution given here is based on preperihelion data span over 0.521 yr in a range of heliocentric distances from 4.31 au to 1.78 au.
This was Oort spike comet with original semimajor axis of about 30,000-31,000 au.
See also: Evangelista-Santana et all (2023)
| solution description | ||
|---|---|---|
| number of observations | 708 | |
| data interval | 2021 06 26 – 2022 02 01 | |
| data type | observed only before perihelion (PRE) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 4.31 au – 1.78au | |
| detectability of NG effects in the comet's motion | comet lost close to perihelion or split comet | |
| type of model of motion | GR - gravitational orbit | |
| data weighting | YES | |
| number of residuals | 1396 | |
| RMS [arcseconds] | 0.28 | |
| orbit quality class | 1b | |
| previous orbit statistics, both Galactic and stellar perturbations were taken into account | ||
|---|---|---|
| no. of returning VCs in the swarm | 5001 | * |
| no. of escaping VCs in the swarm | 0 | |
| no. of hyperbolas among escaping VCs in the swarm | 0 | |
| previous reciprocal semi-major axis [10-6 au-1] | 29.93 – 32.30 – 34.59 | |
| previous perihelion distance [au] | 1400 – 1600 – 1900 | |
| previous aphelion distance [103 au] | 56.4 – 60.3 – 64.9 | |
| time interval to previous perihelion [Myr] | 4.84 – 5.35 – 5.99 | |
| percentage of VCs with qprev > 20 | 100 | |
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.
| previous_g orbit statistics, here only the Galactic tide has been included | ||
|---|---|---|
| no. of returning VCs in the swarm | 5001 | * |
| no. of escaping VCs in the swarm | 0 | |
| no. of hyperbolas among escaping VCs in the swarm | 0 | |
| previous reciprocal semi-major axis [10-6 au-1] | 30.80 – 33.13 – 35.32 | |
| previous perihelion distance [au] | 2.2 – 3 – 4.4 | |
| previous aphelion distance [103 au] | 56.6 – 60.4 – 64.9 | |
| time interval to previous perihelion [Myr] | 4.75 – 5.22 – 5.82 | |
| percentage of VCs with qprev < 10 | 100 | |