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273P/Pons-Gambart
Classification: Halley-type Comet* [NEO]          SPK-ID: 1000765
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2456369.5 (2013-Mar-18.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9753243653418344 2.9535e-06  
a 32.83234635549665 0.0040436 au
q .8101589836385896 3.2556e-06 au
i 136.3960312125772 2.2743e-05 deg
node 320.4311716157664 7.1633e-05 deg
peri 20.19191161075621 0.00022406 deg
M .4627592305599377 8.5891e-05 deg
tp 2456281.170881306387
(2012-Dec-19.67088131)
9.0574e-05 TDB
period 68714.96153890778
188.13
12.694
0.03475
d
yr
n .005239033711692625 9.6784e-07 deg/d
Q 64.85453372735472 0.0079873 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.358485647264827E-10 1.21E-9
A2 [EST] 7.730155120533186E-10 1.544E-10
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      68223 days (186.78 yr)  
   first obs. used      1827-06-21  
   last obs. used      2014-04-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .54482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:12  

Additional Information
 Earth MOID = .171823 au 
 Jupiter MOID = 1.38916 au 
 T_jup = -0.645 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.3   1. 11 2 parameter fit from 184 observations, autocmod 2.9c
comet total magnitude slope K1 8.75   n/a 11 autocmod 2.9c
comet nuclear magnitude M2 14.9   0.8 11 from 784 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 11 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 11 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.0   273P/2012 V4       
 1824.8   273P/1827 M1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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