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 ]  
4953 (1990 MU)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004953
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6576229003688326 1.6524e-07  
a 1.621094052569496 7.8087e-09 AU
q .555025479948079 2.6798e-07 AU
i 24.39091672120434 1.3602e-05 deg
node 77.75035579277686 3.0911e-05 deg
peri 77.72708607449098 3.115e-05 deg
M 6.24665896203115 1.8446e-05 deg
tp 2456987.418545319811
(2014-Nov-25.91854532)
3.8543e-05 JED
period 753.8947961610638
2.06
5.4472e-06
1.491e-08
d
yr
n .4775202081685264 3.4503e-09 deg/d
Q 2.687162625190913 1.2944e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      195  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      15005 days (41.08 yr)  
   first obs. used      1974-07-21  
   last obs. used      2015-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .74507  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Aug-21 06:15:47  

Additional Information
 Earth MOID = .0270327 AU 
 T_jup = 3.976 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a PDS3 (MPC 28112)  
rotation period rot_per 14.218 h n/a LCDB (Rev. 2015-July); Warner et al., 2009  

4953 (1990 MU)          Discovered 1990-Jun-23 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Sep-02 10:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin