Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375580077237777 8.6565e-08  
a 2.37124388550997 1.8417e-08 AU
q 2.045060300792028 2.0624e-07 AU
i 6.721352633020545 9.1908e-06 deg
node 338.2328636378526 6.4173e-05 deg
peri 55.21076731179355 6.9822e-05 deg
M 278.3701859733497 3.0884e-05 deg
tp 2457102.918997365746
(2015-Mar-21.41899737)
0.00011603 JED
period 1333.71416252553
3.65
1.5538e-05
4.254e-08
d
yr
n .2699229041088546 3.1447e-09 deg/d
Q 2.697427470227911 2.0951e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      906  
   data-arc span      14142 days (38.72 yr)  
   first obs. used      1974-08-24  
   last obs. used      2013-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55171  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 14:37:22  

Additional Information
 Earth MOID = 1.0576 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 13.1 mag n/a MPO263381  
rotation period rot_per 5.324 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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) (688)
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-19 17:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin