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JPL Small-Body Database Browser
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3921 Klement'ev (1971 OH)
Classification: Main-belt Asteroid          SPK-ID: 2003921
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2845387541203562 2.9657e-08  
a 2.649242914640413 1.0613e-08 au
q 1.895430636346449 7.7664e-08 au
i 12.0273994894667 3.316e-06 deg
node 155.2770274397277 1.8172e-05 deg
peri 216.4774148790402 1.9623e-05 deg
M 80.64302343380018 8.4474e-06 deg
tp 2458647.686332988544
(2019-Jun-13.18633299)
3.6793e-05 TDB
period 1575.001961929033
4.31
9.4639e-06
2.591e-08
d
yr
n .2285711438473884 1.3734e-09 deg/d
Q 3.403055192934378 1.3632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2177  
   data-arc span      23889 days (65.40 yr)  
   first obs. used      1954-09-06  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46559  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:59:24  

Additional Information
 Earth MOID = .907971 au 
 Jupiter MOID = 2.09533 au 
 T_jup = 3.302 
[ 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 12.6   n/a MPO412199  
diameter diameter 16.513 km 0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3921 Klement'ev (1971 OH)          Discovered 1971-Jul-19 by Burnasheva, B. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1971 OH = 1928 QO = 1954 RM = 1980 WT = 1982 DW4 = 1984 QK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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