C/2022 E2 ATLAS
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Comet C/2022 E2 was discovered on 7 March 2022 by ATLAS Chile (Rio Hurtado), that is more than a year and six months before its perihelion passage. Soon, the prediscovery images of this comet were found going back to 23 February 2022. Comet is still observed (as April 2025).
Comet had its closest approach to the Earth on 1 December 2024 (2.99 au), 2.5 months after its perihelion passage.
Currently, the preferred NG solution given here is based on pre-perihelion data span over 2.55 yr in a range of heliocentric distances from 3.67 au to 2.03 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that likely lead to escape this comet from the solar system on a marginally hyperbolic orbit.
Comet had its closest approach to the Earth on 1 December 2024 (2.99 au), 2.5 months after its perihelion passage.
Currently, the preferred NG solution given here is based on pre-perihelion data span over 2.55 yr in a range of heliocentric distances from 3.67 au to 2.03 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that likely lead to escape this comet from the solar system on a marginally hyperbolic orbit.
| solution description | ||
|---|---|---|
| number of observations | 2733 | |
| data interval | 2022 02 23 – 2024 09 13 | |
| data arc selection | data generally limited to pre-perihelion (PRE) | |
| range of heliocentric distances | 3.67 au – 2.03au | |
| type of model of motion | NC - non-gravitational orbits for symmetric CO-g(r)-like function | |
| data weighting | YES | |
| number of residuals | 5425 | |
| RMS [arcseconds] | 0.36 | |
| orbit quality class | 1a | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2024 10 17 | |
| perihelion date | 2024 09 14.13287334 | ± 0.00098556 |
| perihelion distance [au] | 3.66628934 | ± 0.00000347 |
| eccentricity | 1.00101564 | ± 0.00000378 |
| argument of perihelion [°] | 41.728636 | ± 0.000211 |
| ascending node [°] | 125.380641 | ± 0.000013 |
| inclination [°] | 137.134955 | ± 0.000025 |
| reciprocal semi-major axis [10-6 au-1] | -277.02 | ± 1.03 |
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.
| non-gravitational parameters | ||
|---|---|---|
| A1 [10-8au/day2] | 1.505 | ± 0.0898 |
| A2 [10-8au/day2] | -0.33633 | ± 0.08366 |
| A3 [10-8au/day2] | 0.035653 | ± 0.027248 |
| m | -2.00 | |
| n | 3.000 | |
| k | -2.6000 | |
| r0 [au] | 10.000 | |
| α | 0.0100 | |