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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1608537023133757 2.9329e-08  
a 3.102809221046631 1.3869e-08 au
q 2.603710870269199 8.9469e-08 au
i 1.162887098040579 3.9021e-06 deg
node 191.0140840080673 0.00016056 deg
peri 114.262756492381 0.000161 deg
M 90.50644389877237 1.1825e-05 deg
tp 2458498.610583645630
(2019-Jan-15.11058365)
6.5401e-05 TDB
period 1996.324041740677
5.47
1.3385e-05
3.665e-08
d
yr
n .1803314454331278 1.2091e-09 deg/d
Q 3.601907571824064 1.61e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2370  
   data-arc span      24726 days (67.70 yr)  
   first obs. used      1952-05-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48073  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:41:38  

Additional Information
 Earth MOID = 1.58892 au 
 Jupiter MOID = 1.6458 au 
 T_jup = 3.201 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456725.5 (2014-Mar-09.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .164923027582159 2.9295e-08  
q 2.588343190666119 8.9885e-08 au
tp 2456505.233976716553
(2013-Jul-31.73397672)
6.4714e-05 TDB
node 191.0746581331123 0.00016113 deg
peri 114.5123386243441 0.00016155 deg
i 1.158679062709626 3.9066e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2370  
   data-arc span      24726 days (67.70 yr)  
   first obs. used      1952-05-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48073  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:41:38  

Additional Information
 Jupiter MOID = 1.6458 au 
 T_jup = 3.201 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.582074801866236E-16 -2.611731564074659E-15 2.35390795634294E-13 -5.310863207226202E-16 3.63928377810026E-14 -5.873591202643745E-17
q -2.611731564074659E-15 8.079357710964645E-15 -8.887377582389945E-13 2.273169746247499E-15 -1.391935151399363E-13 2.55806764947377E-16
tp 2.35390795634294E-13 -8.887377582389945E-13 4.187856284695729E-9 7.538478568394063E-12 7.648452101570883E-10 7.380085105899163E-14
node -5.310863207226202E-16 2.273169746247499E-15 7.538478568394063E-12 2.596310775490634E-8 -2.595644769197749E-8 2.230843554615655E-11
peri 3.63928377810026E-14 -1.391935151399363E-13 7.648452101570883E-10 -2.595644769197749E-8 2.609904556864203E-8 -2.228999681298277E-11
i -5.873591202643745E-17 2.55806764947377E-16 7.380085105899163E-14 2.230843554615655E-11 -2.228999681298277E-11 1.526173761835065E-11

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 12.9   n/a MPO332893  
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

[ show close-approach data ]
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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