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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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02970865255927421 2.1065e-08  
a 2.607514750697426 8.7518e-09 au
q 2.530049000925773 5.813e-08 au
i 3.107590302875236 3.2685e-07 deg
node 311.2768960084337 1.4608e-05 deg
peri 126.5330341489835 3.5653e-05 deg
M 351.9437515510609 3.0287e-05 deg
tp 2459430.916677162006
(2021-Aug-04.41667716)
0.0001294 TDB
period 1537.937149884443
4.21
7.7428e-06
2.12e-08
d
yr
n .2340797866980777 1.1785e-09 deg/d
Q 2.684980500469078 9.0118e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2773  
   data-arc span      24218 days (66.31 yr)  
   first obs. used      1955-04-20  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4221  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 10:17:04  

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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