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7924 Simbirsk (1986 PW4)
Classification: Main-belt Asteroid          SPK-ID: 2007924
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1607734335733882 1.8796e-08  
a 3.103631561375588 1.3168e-08 au
q 2.604650058706499 5.8436e-08 au
i 1.162742400363426 7.3772e-07 deg
node 191.0031093502627 3.5044e-05 deg
peri 114.3670765986496 3.3356e-05 deg
M 126.4655926187646 8.2445e-06 deg
tp 2458498.925898039104
(2019-Jan-15.42589804)
4.4221e-05 TDB
period 1997.117725667048
5.47
1.271e-05
3.48e-08
d
yr
n .1802597790672345 1.1472e-09 deg/d
Q 3.602613064044677 1.5286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2588  
   data-arc span      25121 days (68.78 yr)  
   first obs. used      1952-05-24  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:09:34  

Additional Information
 Earth MOID = 1.58788 au 
 Jupiter MOID = 1.64502 au 
 T_jup = 3.201 
[ 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 12.98   n/a E2021B10  
diameter diameter 12.997 km 0.445 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7924 Simbirsk           Discovered 1986 Aug. 6 by N. S. Chernykh and L. I. Chernykh at the Crimean Astrophysical Observatory.
Named for the city of Simbirsk (Ul'yanovsk since 1924), a large industrial and cultural center on the Volga river. Founded in 1648, it is connected with many great events and people in Russian history.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980808/MPCPages.arcLast Updated: 2009-11-17

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Alternate Designations
 1986 PW4 = 1981 TV3 = 1989 AL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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