Important note: this is a comet with the shortest observational arc (only 4 months) among 26 comets studied in Paper 1.
NG solution is very sensitive to data selection, especially the last four observations are crucial.
Nongravitational nominal solution
Observational arc: 1989 08 24 - 1989 12 24 Number of observations: 231 RMS: 1.30 arcsec (452 residuals used, 2.2% rejected residuals )
Heliocentric osculating orbit
Epoch Perihelion time q e ω Ω i
1989 11 10 19891111.914664 0.64236124 1.00002499 150.564098 275.510766 90.146682
± 0.000138 0.00000070 0.00001665 0.000214 0.000275 0.000248
NG parameters:
A1 = (3.3963 ± 0.3166 )×10-8 AU/day2
A2 = (0.50594 ± 0.14935)×10-8 AU/day2
A3 = 0 (assumed)
Barycentric nominal original orbit (at 250 AU from the Sun)
Epoch Perihelion time q e ω Ω i
1691 10 03 19891110.997525 0.64067522 0.99996503 150.615125 275.483548 89.972889
± 0.000392 0.00000348 0.00001425 0.000450 0.000276 0.000251
1/aori = (+42.90 ± 22.24)×10-6 AU-1
Barycentric nominal future orbit (at 250 AU from the Sun)
Epoch Perihelion time q e ω Ω i
2288 05 26 19891112.554362 0.64134280 0.99993982 150.503112 275.566667 90.139492
± 0.000172 0.00000894 0.00001752 0.001486 0.000276 0.000246
1/afut = ( +80.49 ± 27.32)×10-6 AU-1
In the 17th edition of the Catalogue of Cometary orbits (2008):
Nongravitational orbit (180 obs.) with A1 = +3.4 ×10-8 AU/day2 and A2 = +0.6 ×10-8 AU/day2
The same comet in some other internet sources:
More details
Starting swarms of VCs...(heliocentric, osculating orbits)
Gravitational osculating swarm.
Nongravitational osculating swarm.
Original and future orbit at the 250 AU from the Sun.
Comet number 11 in the Table: Nongravitational Oort spike comets (26 objects)
| Name | GR (1/a)ori [10-8 AU/day2] | GR (1/a)osc [10-8 AU/day2] epoch [TT] | GR 1/afut [10-8 AU/day2] | RMSGR [arcsec] | NG (1/a)ori [10-8 AU/day2] | NG (1/a)osc [10-8 AU/day2] epoch [TT] | NG 1/afut [10-8 AU/day2] | RMSNG [arcsec] | NG parameters A1 A2 A3 [10-8 AU/day2] tau shift [day] | |
| 11 | C/1989 Q1 Okazaki-Levy-Rudenko weighting | -12.14 ± 14.02 | -256.94 ± 13.88 1989 11 10 | 182.62 ± 14.02 | 1.84 | +42.90 ± 22.24 | -38.90 ± 25.92 1989 11 10 | +80.49 ± 27.32 | 1.30 | 3.396 ± 0.316 0.5059 ± 0.1493 |
Note: in the following plots black denotes returning clones while red denotes escaping ones.The nominal solution is located at the center of the green circle. Each plot have a header where date of calculation and some other parameters are coded. Also numbers of returning (B=shown+omitted), escaping (C=shown+omitted) and all (T=shown+omitted) Vcs are shown.
Past orbits, at previous perihelion for the returning VCs
Past, gravitational, synchronous.
Past, gravitational, asynchronous.
Past, nongravitational, asynchronous.
Past, nongravitational, synchronous.
Future orbits, at next perihelion for the returning VCs
Future, gravitational, synchronous.
Future, gravitational, asynchronous.
Future, nongravitational, asynchronous.
Future, gravitational, synchronous.
