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 ]  
101998 (1999 RJ76)
Classification: Main-belt Asteroid          SPK-ID: 2101998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1252465569731911 3.0383e-08  
a 2.245936701570422 8.4286e-09 au
q 1.964640862519001 6.6929e-08 au
i 7.079901446922602 4.6904e-06 deg
node 172.2633783708203 2.786e-05 deg
peri 74.55788340956893 3.4326e-05 deg
M 203.5504072891823 2.0212e-05 deg
tp 2459734.777187582164
(2022-Jun-04.27718758)
7.0029e-05 TDB
period 1229.404207431213
3.37
6.9206e-06
1.895e-08
d
yr
n .2928247665202028 1.6484e-09 deg/d
Q 2.527232540621843 9.4842e-09 au
  Orbit Determination Parameters
   # obs. used (total)      858  
   data-arc span      8382 days (22.95 yr)  
   first obs. used      1998-03-03  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56358  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:49  

Additional Information
 Earth MOID = .964448 au 
 Jupiter MOID = 2.50093 au 
 T_jup = 3.610 
[ 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 15.9   n/a MPO436477  

101998 (1999 RJ76)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RJ76 = 2002 LB42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-23 02:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin