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 ]  
78508 (2002 RJ85)
Classification: Main-belt Asteroid          SPK-ID: 2078508
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481700960652024 5.1225e-08  
a 2.540132317770469 1.1888e-08 au
q 2.163760668228093 1.3219e-07 au
i 3.585060449853689 6.4588e-06 deg
node 345.7620942321403 5.5375e-05 deg
peri 324.4769951303027 5.8266e-05 deg
M 174.1834581247482 1.731e-05 deg
tp 2458285.036727583182
(2018-Jun-15.53672758)
7.0641e-05 TDB
period 1478.709751448315
4.05
1.0381e-05
2.842e-08
d
yr
n .2434554851940347 1.7092e-09 deg/d
Q 2.916503967312845 1.365e-08 au
  Orbit Determination Parameters
   # obs. used (total)      730  
   data-arc span      8771 days (24.01 yr)  
   first obs. used      1996-01-18  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55018  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:25:33  

Additional Information
 Earth MOID = 1.15063 au 
 Jupiter MOID = 2.34081 au 
 T_jup = 3.428 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO453206  
diameter diameter 1.764 km 0.358 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.248   0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78508 (2002 RJ85)          Discovered 2002-Sep-05 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 RJ85 = 1998 SF101 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-26 19:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin