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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1373700823420196 5.9225e-08  
a 2.371183654176539 1.3496e-08 au
q 2.045453960354257 1.4625e-07 au
i 6.721566220180194 7.5951e-06 deg
node 338.2322430293129 3.9623e-05 deg
peri 55.3409483881699 4.7999e-05 deg
M 80.2288396746618 2.8383e-05 deg
tp 2457103.282603232939
(2015-Mar-21.78260323)
0.00010434 JED
period 1333.663346871691
3.65
1.1386e-05
3.117e-08
d
yr
n .2699331887949342 2.3046e-09 deg/d
Q 2.696913347998821 1.535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1221  
   data-arc span      15088 days (41.31 yr)  
   first obs. used      1974-08-24  
   last obs. used      2015-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52518  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:50:03  

Additional Information
 Earth MOID = 1.05788 au 
 Jupiter MOID = 2.76269 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 13.4 mag n/a MPO358667  
rotation period rot_per 5.324 h n/a LCDB (Rev. 2015-December); 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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