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4166 Pontryagin (1978 SZ6)
Classification: Main-belt Asteroid          SPK-ID: 2004166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02970865252295381 2.1088e-08  
a 2.607514750688836 8.7601e-09 au
q 2.530049001012145 5.8206e-08 au
i 3.107590303006266 3.2687e-07 deg
node 311.2768960067778 1.461e-05 deg
peri 126.5330341775194 3.5687e-05 deg
M 351.9437515190866 3.0328e-05 deg
tp 2459430.916677298432
(2021-Aug-04.41667730)
0.00012958 TDB
period 1537.937149876843
4.21
7.7502e-06
2.122e-08
d
yr
n .2340797866992344 1.1796e-09 deg/d
Q 2.684980500365527 9.0203e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2743  
   data-arc span      24063 days (65.88 yr)  
   first obs. used      1955-04-20  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42432  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:17:39  

Additional Information
 Earth MOID = 1.54677 au 
 Jupiter MOID = 2.37664 au 
 T_jup = 3.409 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.87   n/a E2021B10  
diameter diameter 8.011 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4166 Pontryagin (1978 SZ6)          Discovered 1978-Sep-26 by Zhuravleva, L. V. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 SZ6 = 1972 GD1 = 1986 RX4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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