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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
249610 (1999 RJ176)
Classification: Main-belt Asteroid          SPK-ID: 2249610
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2840301829632367 4.5648e-08  
a 2.365196522634512 1.2429e-08 au
q 1.69340932156662 1.0938e-07 au
i 5.03199741086807 6.3273e-06 deg
node 331.8616582718623 5.8394e-05 deg
peri 48.95189120036826 6.0096e-05 deg
M 124.4337680470943 1.4124e-05 deg
tp 2458141.264950914312
(2018-Jan-22.76495091)		 4.9536e-05 TDB
period 1328.615377204341
3.64		 1.0473e-05
2.867e-08		 d
yr
n .2709587787230855 2.1359e-09 deg/d
Q 3.036983723702404 1.5959e-08 au
   Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      7115 days (19.48 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55469  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:28:53  

Additional Information
 Earth MOID = .700169 au 
 Jupiter MOID = 2.4469 au 
 T_jup = 3.488 
[ 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 17.0   n/a MPO433635  
rotation period rot_per 3.587 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

249610 (1999 RJ176)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-25 20:46 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin