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8141 Nikolaev (1982 SO4)
Classification: Main-belt Asteroid          SPK-ID: 2008141
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2916498467300451 3.436e-08  
a 2.390619819002095 6.7798e-09 au
q 1.693395915200326 8.3437e-08 au
i 7.521834705119499 5.0271e-06 deg
node 13.96474015715472 2.3271e-05 deg
peri 55.61626858359406 2.4838e-05 deg
M 36.67715933903678 7.0215e-06 deg
tp 2458862.951014506948
(2020-Jan-14.45101451)
2.6321e-05 TDB
period 1350.094600286975
3.70
5.7433e-06
1.572e-08
d
yr
n .266647981499577 1.1343e-09 deg/d
Q 3.087843722803865 8.7571e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1807  
   data-arc span      13729 days (37.59 yr)  
   first obs. used      1982-09-20  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40858  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:54:14  

Additional Information
 Earth MOID = .720438 au 
 Jupiter MOID = 2.28439 au 
 T_jup = 3.462 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456999.5 (2014-Dec-08.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2898737421222349 3.4212e-08  
q 1.698438034549585 8.2967e-08 au
tp 2457510.970890120767
(2016-May-02.47089012)
2.7525e-05 TDB
node 14.05151866624651 2.3212e-05 deg
peri 55.32490048648646 2.4829e-05 deg
i 7.530550707090879 5.0301e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1807  
   data-arc span      13729 days (37.59 yr)  
   first obs. used      1982-09-20  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40858  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:54:14  

Additional Information
 Jupiter MOID = 2.28439 au 
 T_jup = 3.462 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.17043687303206E-15 -2.833934361775552E-15 -3.864954302888531E-13 1.733195522736404E-14 -1.074874375646258E-13 -5.257310800422907E-15
q -2.833934361775552E-15 6.883460169049506E-15 8.964252255342748E-13 -4.229975515123151E-14 2.471683486105841E-13 1.306831554104536E-14
tp -3.864954302888531E-13 8.964252255342748E-13 7.576053074539039E-10 -1.05670899125807E-11 2.478665372193368E-10 3.783981594529119E-12
node 1.733195522736404E-14 -4.229975515123151E-14 -1.05670899125807E-11 5.387823164543653E-10 -5.363658235997082E-10 1.261181132441141E-12
peri -1.074874375646258E-13 2.471683486105841E-13 2.478665372193368E-10 -5.363658235997082E-10 6.164917259697168E-10 -2.084365745580656E-13
i -5.257310800422907E-15 1.306831554104536E-14 3.783981594529119E-12 1.261181132441141E-12 -2.084365745580656E-13 2.530183481170757E-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 13.6   n/a MPO416802  
diameter diameter 4.366 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.243   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8141 Nikolaev           Discovered 1982 Sept. 20 by N. S. Chernykh at the Crimean Astrophysical Observatory.
Nikolaev is a city and large industrial and cultural center in southern Ukraine. The Nikolaev Astronomical Observatory was established there in 1821.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010902/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1982 SO4 = 1982 TL = 1991 CV2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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