Nongravitational nominal solution

   Obs. arc:      1956 11 08 - 1958 04 11  
   Number of obs: 249    
   RMS:           1.39 arc second, (458 residuals used, 8.0% rejected residuals)  

Heliocentric osculating orbit at the standard epoch close to perihelion time (the same as in MWC08)

  Epoch        Perihelion time   q             e            ω              Ω            i      
  1957 03 23  19570408.032187    0.31603140    1.00016037   308.780727     215.855526   119.933201        
                   ± 0.000059    0.00000178    0.00000622     0.000324       0.000071     0.000281         

  NG parameters:   
   A1=(1.9481  ± 0.1391)  10-8 AU/day2  
   A2=(0.11227 ± 0.02225) 10-8 AU/day2  
   A3=(0.37285 ± 0.08729) 10-8 AU/day2  

Heliocentric osculating orbit at the epoch close to the discovery date (used as starting orbit in this investigation)

  Epoch        Perihelion time   q             e            ω              Ω            i      
  1956 10 14  19570408.028353    0.31598046    1.00021561   308.783333     215.856590   119.939289        
                   ± 0.000158    0.00000245    0.00000369     0.000334       0.000090     0.000075         

  NG parameters:   
   A1=(1.9481  ± 0.1391)  10-8 AU/day2  
   A2=(0.11227 ± 0.02225) 10-8 AU/day2  
   A3=(0.37285 ± 0.08729) 10-8 AU/day2  

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

  Epoch        Perihelion time   q             e            ω              Ω            i      
  1660 03 19   19570408.524057   0.31732219    0.99999671   308.750253     216.471093   119.981218        
                    ± 0.003916   0.00000252    0.00000362     0.000332       0.000087     0.000075   
   1/aori =  (+10.37 ± 11.42) 10-6 AU-1  

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

  Epoch        Perihelion time   q             e            ω              Ω            i      
  2247 12 28   19570408.428079   0.31297901    1.00018143   308.809544     216.772869   119.896440        
                    ± 0.000086   0.00000240    0.00000312     0.000342       0.000071     0.000053   
   1/afut = (-579.69 ±  9.97) 10-6 AU-1  

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

Nongravitational orbit (150 obs.) with A1= 1.7 10-8 AU/day2, A2= +0.1 10-8 AU/day2


The same comet in some other internet sources:


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 7 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]
7 C/1956 R1 Arend-Roland
weighting
-97.97 ± 5.46 -790.89 ± 5.39
1956 10 14
-603.51 ± 5.47 1.68 +10.37 ± 11.42 -682.34 ± 11.68
1956 10 14
-579.69 ± 9.97 1.39 1.948 ± 0.139
0.1123 ± 0.0223
0.3729 ± 0.0873


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 :

1956r1amz.png
Past, gravitational, asynchronous.
1956r1amsz.png
Past, gravitational, synchronous.


1956r1nmz.png
Past, nongravitational, asynchronous.
1956r1nmsz.png
Past, nongravitational, synchronous.


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

1956r1apz.png
Future, gravitational, asynchronous.
1956r1apsz.png
Future, gravitational, synchronous.


1956r1npz.png
Future, nongravitational, asynchronous.
1956r1npsz.png
Future, nongravitational, synchronous.