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 ]  
70402 (1999 RJ242)
Classification: Main-belt Asteroid          SPK-ID: 2070402
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04880256646556407 3.7963e-08  
a 2.570472405415778 1.5875e-08 au
q 2.445026755002576 9.9779e-08 au
i 3.094631179942191 5.2924e-06 deg
node 354.5993238892989 7.5421e-05 deg
peri 261.186394622521 9.426e-05 deg
M 98.173693741761 5.8051e-05 deg
tp 2458590.002537828132
(2019-Apr-16.50253783)
0.00024176 TDB
period 1505.281921759968
4.12
1.3944e-05
3.818e-08
d
yr
n .2391578579373954 2.2155e-09 deg/d
Q 2.695918055828979 1.6649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      7266 days (19.89 yr)  
   first obs. used      1998-05-01  
   last obs. used      2018-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60939  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:09:55  

Additional Information
 Earth MOID = 1.43254 au 
 Jupiter MOID = 2.31725 au 
 T_jup = 3.426 
[ 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 15.6   n/a MPO439538  
diameter diameter 2.260 km 0.841 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.239   0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70402 (1999 RJ242)          Discovered 1999-Sep-04 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RJ242 = 1999 RX143 = 2000 WJ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-20 13:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin