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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02956965665837265 2.1088e-08  
a 2.607208588805538 8.7952e-09 au
q 2.530114325997798 5.8221e-08 au
i 3.107600920436555 3.2686e-07 deg
node 311.2758910381518 1.4611e-05 deg
peri 126.5226219042358 3.5797e-05 deg
M 306.0626718215752 3.0426e-05 deg
tp 2459430.882253948176
(2021-Aug-04.38225395)
0.00013006 TDB
period 1537.666292015537
4.21
7.7808e-06
2.13e-08
d
yr
n .2341210195406706 1.1847e-09 deg/d
Q 2.684302851613278 9.0553e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2742  
   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      .42274  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:01:21  

Additional Information
 Earth MOID = 1.54654 au 
 Jupiter MOID = 2.37756 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 12.87   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

[ show close-approach data ]
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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