C/1993 Q1 Mueller
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Comet C/1993 Q1 was discovered on 16 August 1993 by Jean Mueller (Palomar Sky Survey II). Later, a prediscovery image of this comet taken on 28 September 1992 (Palomar Mountain-DSS) was found. At the moment of discovery, this comet was about 7.5 months before its perihelion passage and it was last observed in the mid-April 1994.
Comet had its closest approach to the Earth on 7 May 1994 (0.899 au), 1.5 month after its perihelion passage.
Preferred solution given here is based on data spanning over 1.55 yr in a range of heliocentric distances: 6.51 au – 0.967 au (perihelion) – 1.04 au.
Sekanina (2019) speculates that this comet may not have survived the perihelion passage.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; if C/1993 Q1 survived the perihelion passage these perturbations lead to escape the comet on hyperbolic orbit from the planetary zone.
See also Królikowska 2020. .
Comet had its closest approach to the Earth on 7 May 1994 (0.899 au), 1.5 month after its perihelion passage.
Preferred solution given here is based on data spanning over 1.55 yr in a range of heliocentric distances: 6.51 au – 0.967 au (perihelion) – 1.04 au.
Sekanina (2019) speculates that this comet may not have survived the perihelion passage.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; if C/1993 Q1 survived the perihelion passage these perturbations lead to escape the comet on hyperbolic orbit from the planetary zone.
See also Królikowska 2020. .
| solution description | ||
|---|---|---|
| number of observations | 536 | |
| data interval | 1992 09 28 – 1994 04 17 | |
| data type | almost all measurements before perihelion (PRE++) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 6.51 au – 0.97 au (perihelion) – 1.04 au | |
| type of model of motion | NS - non-gravitational orbits for standard g(r) | |
| data weighting | YES | |
| number of residuals | 1063 | |
| RMS [arcseconds] | 0.93 | |
| orbit quality class | 1b | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 1994 03 29 | |
| perihelion date | 1994 03 26.27531912 | ± 0.00037157 |
| perihelion distance [au] | 0.96732496 | ± 0.00000849 |
| eccentricity | 1.00021522 | ± 0.00001371 |
| argument of perihelion [°] | 261.024041 | ± 0.000917 |
| ascending node [°] | 193.788746 | ± 0.000241 |
| inclination [°] | 105.02519 | ± 0.00009 |
| reciprocal semi-major axis [10-6 au-1] | -222.49 | ± 14.17 |
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] | 3.9776 | ± 0.3259 |
| A2 [10-8au/day2] | 0.81532 | ± 0.12414 |
| A3 [10-8au/day2] | 0.39844 | ± 0.15817 |
| m | -2.15 | |
| n | 5.093 | |
| k | -4.6142 | |
| r0 [au] | 2.808 | |
| α | 0.1113 | |