C/2022 N2 PanSTARRS
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Comet C/2022 N2 was discovered on 4 July 2022 by Pan-STARRS 2 (Haleakala), that is more than three years before its perihelion passage. Soon, the prediscovery images of this comet were found going back to the beginning of June 2022.
As in April 2025, this comet still is going to the perihelion point and will have its closest approach to the Earth on 9 November 2025 (2.95 au), almost four months after its perihelion passage.
Thus, the preferred NG solution given here is based on pre-perihelion data span over 2.71 yr in a range of heliocentric distances from 9.73 au to 4.09 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that likely lead to escape this comet from the solar system on a hyperbolic orbit.
As in April 2025, this comet still is going to the perihelion point and will have its closest approach to the Earth on 9 November 2025 (2.95 au), almost four months after its perihelion passage.
Thus, the preferred NG solution given here is based on pre-perihelion data span over 2.71 yr in a range of heliocentric distances from 9.73 au to 4.09 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that likely lead to escape this comet from the solar system on a hyperbolic orbit.
| solution description | ||
|---|---|---|
| number of observations | 1720 | |
| data interval | 2022 06 02 – 2025 02 16 | |
| data type | observed only before perihelion (PRE) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 9.73 au – 4.09au | |
| type of model of motion | NC - non-gravitational orbits for symmetric CO-g(r)-like function | |
| data weighting | YES | |
| number of residuals | 3393 | |
| RMS [arcseconds] | 0.32 | |
| orbit quality class | 1a | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2025 05 05 | |
| perihelion date | 2025 07 31.77337018 | ± 0.00203515 |
| perihelion distance [au] | 3.82549899 | ± 0.00001461 |
| eccentricity | 1.00322608 | ± 0.00000507 |
| argument of perihelion [°] | 75.390604 | ± 0.000520 |
| ascending node [°] | 319.740567 | ± 0.000031 |
| inclination [°] | 5.502945 | ± 0.000007 |
| reciprocal semi-major axis [10-6 au-1] | -843.31 | ± 1.33 |
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] | 3.7126 | ± 0.0337 |
| A2 [10-8au/day2] | -0.17785 | ± 0.19025 |
| A3 [10-8au/day2] | 0 | (assumed) |
| m | -2.00 | |
| n | 3.000 | |
| k | -2.6000 | |
| r0 [au] | 10.000 | |
| α | 0.0100 | |