C/2017 B3 LINEAR
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Comet C/2017 B3 was discovered on 26 January 2017 with the LINEAR survey, , that is about two years before its perihelion passage. Some prediscovery images of this comet were found: taken on 1 and 10 of Aprilnbsp;2016 by the Pan-STARRS 1 telescope (Haleakala).
Comet had its closest approach to the Earth on 19nbsp;Augustnbsp;2019 (3.480nbsp;au), about a 6.5nbsp;months after its perihelion passage.
Preferred NGnbsp;solution given here is based on data arc spanning over 5.83nbsp;yr in a range of heliocentric distances: 9.16 au – 3.92 au (perihelion) – 9.15 au.
This comet suffers small planetary perturbations during its passage through the planetary system; this is a long-period comet with original and future semimajor axes of about 3,300 au, and 2,100 au, respectively.
Comet had its closest approach to the Earth on 19nbsp;Augustnbsp;2019 (3.480nbsp;au), about a 6.5nbsp;months after its perihelion passage.
Preferred NGnbsp;solution given here is based on data arc spanning over 5.83nbsp;yr in a range of heliocentric distances: 9.16 au – 3.92 au (perihelion) – 9.15 au.
This comet suffers small planetary perturbations during its passage through the planetary system; this is a long-period comet with original and future semimajor axes of about 3,300 au, and 2,100 au, respectively.
| solution description | ||
|---|---|---|
| number of observations | 365 | |
| data interval | 2016 03 04 – 2019 02 01 | |
| data arc selection | data generally limited to pre-perihelion (PRE) | |
| range of heliocentric distances | 9.16 au – 3.92au | |
| type of model of motion | NC - non-gravitational orbits for symmetric CO-g(r)-like function | |
| data weighting | YES | |
| number of residuals | 709 | |
| RMS [arcseconds] | 0.27 | |
| orbit quality class | 1a | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2019 02 06 | |
| perihelion date | 2019 02 02.49799299 | ± 0.00209717 |
| perihelion distance [au] | 3.92116899 | ± 0.00000743 |
| eccentricity | 1.00208078 | ± 0.00000826 |
| argument of perihelion [°] | 284.748711 | ± 0.000395 |
| ascending node [°] | 2.176760 | ± 0.000091 |
| inclination [°] | 54.178662 | ± 0.000016 |
| reciprocal semi-major axis [10-6 au-1] | -530.65 | ± 2.11 |
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).
| non-gravitational parameters | ||
|---|---|---|
| A1 [10-8au/day2] | 1.2098 | ± 0.2563 |
| A2 [10-8au/day2] | -0.19568 | ± 0.16113 |
| A3 [10-8au/day2] | 0.44121 | ± 0.08435 |
| m | -2.00 | |
| n | 3.000 | |
| k | -2.6000 | |
| r0 [au] | 10.000 | |
| α | 0.0100 | |