Nongravitational nominal solution 


   Observational arc:        1991 02 23 - 1992 09 30  
   Number of observations:   114  
   RMS:                      0.78 arcsec (213 residuals used, 6.6% rejected residuals )

Heliocentric osculating orbit

  Epoch        Perihelion time   q             e            ω              Ω            i      
  1992 01 19   19920120.026976   1.51771129    1.00040745   271.159246     11.834904    95.456595        
                    ± 0.000122   0.00000327    0.00000888     0.000035      0.000028     0.000089         

  NG parameters:   
   A1 = ( 0.65566 ± 0.22993)×10-8 AU/day2  
   A2 = (-0.34009 ± 0.13367)×10-8 AU/day2  
   A3 = ( 0.07240 ± 0.03789)×10-8 AU/day2

Barycentric nominal original orbit (at 250 AU from the Sun)

  Epoch        Perihelion time   q             e             ω             Ω            i      
  1692 11 06   19920118.919635   1.51348314    0.99997844    271.254132    12.531089    95.458705           
                    ± 0.000253   0.00000532    0.00000610      0.000270     0.000025     0.000085      
   1/aori =  (+14.24 ± 4.03)×10-6 AU-1

Barycentric nominal future orbit (at 250 AU from the Sun)

  Epoch        Perihelion time   q             e             ω             Ω            i      
  2290 01 16   19920120.599324   1.51751230    1.00014135    271.121950    12.562408    95.436415        
                    ± 0.000348   0.00000604    0.00001110      0.000370     0.000048     0.000085      
   1/afut = (-93.14 ± 7.31)×10-6 AU-1

In the 17th edition of the Catalogue of Cometary orbits (2008):

Gravitational orbit (97 obs.) with 0 < 1/aori < 10-4 AU-1.

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 14 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]
14 C/1991 F2 Helin-Lawrence
weighting 		+12.53 ± 1.79 -286.86 ± 1.78
1992 01 19 		-116.77 ± 1.79 0.83 +14.24 ± 4.03 -268.47 ± 5.85
1992 01 19 		-93.14 ± 7.31 0.78 0.6557 ± 0.2299
-0.3401 ± 0.1337
0.07240 ± 0.03789


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 :

1991f2nmz.png
Past, nongravitational, asynchronous,
no weighting.
1991f2nmz.png
Past, nongravitational, asynchronous,
with weighting.


1991f2nmsz.png
Past, nongravitational, synchronous,
no weighting.
1991f2nmsz.png
Past, nongravitational, synchronous,
with weighting.


Future orbits, at escape border (no returning VCs) :

1991f2npsz.png
Future, nongravitational
no weighting.
1991f2npsz.png
Future, nongravitational
with weighting.



≡