Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
523984 (1999 RA251)
Classification: Main-belt Asteroid          SPK-ID: 2523984
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04003832837866255 5.3269e-08  
a 2.322921352349979 1.689e-08 au
q 2.229915464446784 1.2355e-07 au
i 7.098964783264843 6.882e-06 deg
node 169.1551478066658 3.5437e-05 deg
peri 324.1143405165336 8.234e-05 deg
M 166.3957858671753 7.6543e-05 deg
tp 2458402.790706752285
(2018-Oct-11.29070675)
0.00027309 TDB
period 1293.153816653385
3.54
1.4104e-05
3.861e-08
d
yr
n .2783891563121711 3.0362e-09 deg/d
Q 2.415927240253175 1.7566e-08 au
  Orbit Determination Parameters
   # obs. used (total)      159  
   data-arc span      7679 days (21.02 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5982  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:40:51  

Additional Information
 Earth MOID = 1.24625 au 
 Jupiter MOID = 2.57482 au 
 T_jup = 3.565 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.7   .39187 MPO461154 autocmod 2.6q

523984 (1999 RA251)          Discovered 1999-Sep-05 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-02 10:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin