C/2004 YJ35 LINEAR
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Comet C/2004 YJ35 was discovered on 31 December 2004 during Lincoln Laboratory Near-Earth Asteroid Research project, that is 2 months before its perihelion passage, and was observed until 1 December 2005 [MPC database]. Comet had its closest approach to the Earth on 19 February 2005 (1.405 au), that is 12 days before perihelion.
GR solution given here is based on data spanning over 0.918 yr in a range of heliocentric distances: 1.95 au – 1.78 au (perihelion) – 3.68 au. NG orbit is not possible to obtain.
This Oort spike comet suffers moderate planetary perturbations while passing through the planetary system; these perturbations lead to more tight future orbit with semimajor axis of about 1250 au (see future barycentric orbits).
GR solution given here is based on data spanning over 0.918 yr in a range of heliocentric distances: 1.95 au – 1.78 au (perihelion) – 3.68 au. NG orbit is not possible to obtain.
This Oort spike comet suffers moderate planetary perturbations while passing through the planetary system; these perturbations lead to more tight future orbit with semimajor axis of about 1250 au (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 220 | |
| data interval | 2004 12 31 – 2005 12 01 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 1.95 au – 1.78 au (perihelion) – 3.68 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 | 435 | |
| RMS [arcseconds] | 0.35 | |
| orbit quality class | 1b | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 1705 06 12 | |
| perihelion date | 2005 03 03.07305978 | ± 0.00014225 |
| perihelion distance [au] | 1.78287859 | ± 0.00000082 |
| eccentricity | 0.99996602 | ± 0.00000423 |
| argument of perihelion [°] | 136.875658 | ± 0.000076 |
| ascending node [°] | 328.221067 | ± 0.000034 |
| inclination [°] | 52.398541 | ± 0.000025 |
| reciprocal semi-major axis [10-6 au-1] | 19.06 | ± 2.37 |
| file containing 5001 VCs swarm |
|---|
| 2004yja5.bmi |
Upper panel: 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.
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
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.