C/2010 R1 LINEAR

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Planetology
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C/2010 R1 LINEAR

General description

Comet C/2010 R1 was discovered 1.7 yr before perihelion passage and next observed 3.6 yr in a range of heliocentric distances: 7.15 au – 5.621 au (perihelion) – 7.40 au.

Comet had its closest approach to Earth on 10 May 2012 (4.694 au, eight days before perihelion).

C/2010 R1 suffered a very slight planetary perturbations during its passage through the planetary system.

Figure caption: 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.

SSDP Cometary Note C2010R1A6-001

Comet C/2010 R1 LINEAR

number of observations	1619
number of residuals	3198
data interval	2010 Sep. 4 — 2014 Mar. 30
rms [arcsec]	0.44
orbit quality class

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT)	20120602.0	= JD 2456080.5
time of perihelion passage (TT)	20120518.897181	± 0.000303
perihelion distance	5.62142194	± 0.00000241
eccentricity	1.00366511	± 0.00000283
argument of perihelion [deg]	114.496303	± 0.000034
longitude of the ascending node [deg]	343.649440	± 0.000016
inclination [deg]	156.933395	± 0.000004
inverse semimajor axis [10^-6 au^-1]	-651.99	± 0.50

Note: Epoch is given in a format: yyyymmdd.d, time of perihelion passage in a format of yyyymmdd.dddddd.

Figure caption: Six 2D-projections of the 6D space of original swarm (5001 VCs) of C/2010 R1. Each density map is given in logarithmic scale presented on the right in the individual panel.
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Original orbital elements (barycentric; at 250 au from the Sun)

Epoch (TT)	17050831
time of perihelion passage (TT)	20120518.570864	± 0.000305
perihelion distance	5.62134696	± 0.00000230
eccentricity	0.99975643	± 0.00000280
argument of perihelion [deg]	114.531775	± 0.000035
longitude of the ascending node [deg]	343.648198	± 0.000017
inclination [deg]	156.925538	± 0.000004
inverse semimajor axis [10^-6 au^-1]	43.33	± 0.50

Note: Values of uncertainties of original/future orbital elements were derived using a swarm of 5001 osculating orbits of VCs (including the nominal osculating orbit given above) for original/future orbital evolution calclulations and then by fitting the distribution of a given orbital element of original/future swarm of VCs to Gaussian distribution.

Original barycentric positions and velocities of 5001 VCs at 250 au from the Sun are given here (data format), i.e. before entering the planetary zone.

Figure caption: Six 2D-projections of the 6D space of future swarm (5001 VCs) of C/2010 R1. Each density map is given in logarithmic scale presented on the right in the individual panel.
The same figure in the new window

Future orbital elements (barycentric; at 250 au from the Sun)

Epoch (TT)	23190704
time of perihelion passage (TT)	20120518.214741	± 0.000307
perihelion distance	5.62509247	± 0.00000236
eccentricity	0.99957458	± 0.00000280
argument of perihelion [deg]	114.527998	± 0.000035
longitude of the ascending node [deg]	343.702379	± 0.000017
inclination [deg]	156.950481	± 0.000004
inverse semimajor axis [10^-6 au^-1]	75.63	± 0.50