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419P/PANSTARRS (2021 A11)
Classification: Encke-type Comet          SPK-ID: 1003379
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 2457476.5 (2016-Mar-29.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2783765154369626 3.019e-06  
a 3.522315348529624 4.4361e-06 au
q 2.541785475535817 1.373e-05 au
i 2.804389789368292 3.2709e-05 deg
node 40.42666771858198 0.00038757 deg
peri 187.1935828025283 0.0024057 deg
M 56.63180716633693 0.0014012 deg
tp 2457096.661747309406
(2015-Mar-15.16174731)
0.008718 TDB
period 2414.575444625681
6.61
0.0045615
1.249e-05
d
yr
n .1490945337000265 2.8166e-07 deg/d
Q 4.502845221523431 5.671e-06 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      2273 days (6.22 yr)  
   first obs. used      2015-01-24  
   last obs. used      2021-04-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .63182  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:36:48  

Additional Information
 Earth MOID = 1.53217 au 
 Jupiter MOID = .496632 au 
 T_jup = 3.056 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.2   1. 24 from 141 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 23.25   n/a 24 autocmod 2.9c
comet nuclear magnitude M2 14.5   0.8 24 from 102 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 24 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 24 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.8   419P/2021 A11       
 2015.2   419P/2015 F1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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