Comet C/1999 Y1 LINEAR

Nongravitational nominal solution


   Observational arc:        1999 10 29 - 2003 07 19  
   Number of observations:   884  
   RMS:                      0.48 arcsec (1749 residuals used, 1.1% rejected residuals ) 

Heliocentric osculating orbit

  Epoch        Perihelion time   q             e            ω              Ω            i      
  2001 04 01   20010324.103573   3.09119953    1.00060683   184.283131    188.884023   134.786998              
                    ± 0.000123   0.00000131    0.00000265     0.000029      0.000012     0.000012         

  NG parameters:   
   A1 = (296.45 ±  7.64 )×10-8 AU/day2  
   A2 = (48.859 ± 10.448)×10-8 AU/day2  
   A3 = (45.305 ±  3.401)×10-8 AU/day2  

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

  Epoch        Perihelion time   q             e             ω             Ω            i      
  1698 11 15   20010324.030859   3.08406653    0.99985392    184.261611   189.447269   134.791626              
                    ± 0.000378   0.00000165    0.00000290      0.000052     0.000014     0.000022         
   1/aori =  ( +47.35 ± 0.94)×10-6 AU-1  

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

  Epoch        Perihelion time   q             e             ω             Ω            i      
  2307 02 17   20010323.059698   3.08855418    0.99893231    184.113577   189.555700   134.816031              
                    ± 0.000391   0.00000184    0.00000450      0.000083     0.000013     0.000022         
   1/afut = (+345.69 ± 1.46)×10-6 AU-1  

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

Gravitational orbit (783 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 20 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]
20 C/1999 Y1 LINEAR
weighting
+42.92 ± 0.88 -196.65 ± 0.88
2001 04 01
+350.42 ± 0.88 0.61 +47.35 ± 0.94 -193.42 ± 0.86
2001 04 01
+345.69 ± 1.46 0.48 296.5 ± 7.6
48.86 ± 10.45
5.305 ± 3.401


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:

1999y1amz.png
Past, gravitational,asynchronous.
1999y1amsz.png
Past, gravitational,synchronous.


1999y1nmz.png
Past, nongravitational,asynchronous.
1999y1nmsz.png
Past, nongravitational,synchronous.


Future orbits, at next perihelion:

1999y1apz.png
Future, gravitational, asynchronous.
1999y1apsz.png
Future, gravitational, synchronous.


1999y1npz.png
Future, nongravitational, asynchronous.
1999y1npsz.png
Future, nongravitational, synchronous.