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 ]  
101158 (1998 RA77)
Classification: Mars-crossing Asteroid          SPK-ID: 2101158
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2852500770233081 2.709e-08  
a 2.293513624610501 6.8129e-09 au
q 1.639288686536349 6.2881e-08 au
i 4.769375907882809 8.4103e-06 deg
node 33.0381510013863 3.9594e-05 deg
peri 272.2598648087645 4.6699e-05 deg
M 120.9741556035353 2.0602e-05 deg
tp 2458574.175283303269
(2019-Mar-31.67528330)
7.165e-05 TDB
period 1268.675092172647
3.47
5.6529e-06
1.548e-08
d
yr
n .2837605957751472 1.2644e-09 deg/d
Q 2.947738562684652 8.7563e-09 au
  Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      10364 days (28.38 yr)  
   first obs. used      1991-09-04  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50523  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:06  

Additional Information
 Earth MOID = .633383 au 
 Jupiter MOID = 2.33563 au 
 T_jup = 3.537 
[ 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 16.4   n/a MPO337990  

101158 (1998 RA77)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 RA77 = 2001 HE13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-04 22:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin