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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1374494801833874 4.1046e-08  
a 2.372063201737048 1.1132e-08 au
q 2.046024347696149 9.8747e-08 au
i 6.719394348713993 7.3074e-06 deg
node 338.2311126516964 3.5485e-05 deg
peri 55.52996667721101 4.4741e-05 deg
M 133.9797531408447 2.7418e-05 deg
tp 2457103.879681875826
(2015-Mar-22.37968188)
0.00010091 JED
period 1334.405463016182
3.65
9.3936e-06
2.572e-08
d
yr
n .2697830681735108 1.8991e-09 deg/d
Q 2.698102055777947 1.2662e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1423  
   data-arc span      15214 days (41.65 yr)  
   first obs. used      1974-08-24  
   last obs. used      2016-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5188  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:46:00  

Additional Information
 Earth MOID = 1.05865 au 
 Jupiter MOID = 2.7592 au 
 T_jup = 3.522 
[ 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 13.5 mag n/a MPO365293  
rotation period rot_per 5.324 h n/a LCDB (Rev. 2016-February); 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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