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JPL Small-Body Database Browser
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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 | 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02947239280975765 3.6095e-08  
a 2.607737656770865 1.1378e-08 au
q 2.530881388205717 9.2585e-08 au
i 3.107505322458358 4.0078e-06 deg
node 311.2749055542367 8.3164e-05 deg
peri 126.0881564066999 0.00012086 deg
M 259.6655405865241 8.616e-05 deg
tp 2459429.188554852256
(2021-Aug-02.68855485)
0.00036794 TDB
period 1538.134362301496
4.21
1.0067e-05
2.756e-08
d
yr
n .2340497740791223 1.5318e-09 deg/d
Q 2.684593925336013 1.1714e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2135  
   data-arc span      23528 days (64.42 yr)  
   first obs. used      1955-04-20  
   last obs. used      2019-09-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:05:59  

Additional Information
 Earth MOID = 1.54773 au 
 Jupiter MOID = 2.37848 au 
 T_jup = 3.409 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO448955  
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

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