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3900 Knezevic (1985 RK)
Classification: Main-belt Asteroid          SPK-ID: 2003900
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1374655619958474 7.0557e-08  
a 2.370997662066387 1.549e-08 AU
q 2.045067135959591 1.7519e-07 AU
i 6.721655847600081 8.0693e-06 deg
node 338.2316480827309 4.2879e-05 deg
peri 55.23257034656675 5.0847e-05 deg
M 332.3316595168958 2.9201e-05 deg
tp 2457102.988639042094
(2015-Mar-21.48863904)
0.00010856 JED
period 1333.506434102346
3.65
1.3068e-05
3.578e-08
d
yr
n .2699649516444479 2.6455e-09 deg/d
Q 2.696928188173183 1.7619e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1043  
   data-arc span      14977 days (41.00 yr)  
   first obs. used      1974-08-24  
   last obs. used      2015-08-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50649  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:10:46  

Additional Information
 Earth MOID = 1.05872 AU 
 T_jup = 3.523 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO309178  
rotation period rot_per 5.324 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Published Reference List:
[Hasegawa, S.; Miyaska, S.; Mito, H.; Sarugaku, Y.; et al. (2012) ACM 2012, #6281.]
SMASSII spectral type spec_B V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3900 Knezevic (1985 RK)          Discovered 1985-Sep-14 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 RK = 1974 QS1 = 1974 RE2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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