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 ]  
154877 (2004 RA118)
Classification: Main-belt Asteroid          SPK-ID: 2154877
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 .09221315220628949 4.9733e-08  
a 2.77124710696493 2.8096e-08 au
q 2.515701675689134 1.4111e-07 au
i 13.10343337204257 7.1932e-06 deg
node 19.01153183714619 2.0689e-05 deg
peri 227.5044823805959 4.3615e-05 deg
M 243.5871030519662 4.2643e-05 deg
tp 2459545.391335443213
(2021-Nov-26.89133544)
0.00020407 TDB
period 1685.04423394877
4.61
2.5626e-05
7.016e-08
d
yr
n .2136442431284833 3.249e-09 deg/d
Q 3.026792538240727 3.0687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      8859 days (24.25 yr)  
   first obs. used      1995-10-18  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:34:56  

Additional Information
 Earth MOID = 1.52359 au 
 Jupiter MOID = 2.01217 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456723.5 (2014-Mar-07.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09403446911299883 4.9286e-08  
q 2.509145135036835 1.3985e-07 au
tp 2456177.539892815859
(2012-Sep-07.03989282)
0.00017799 TDB
node 19.06213010702617 2.0707e-05 deg
peri 227.7159538205589 4.3161e-05 deg
i 13.10199383435416 7.1919e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      8859 days (24.25 yr)  
   first obs. used      1995-10-18  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:34:56  

Additional Information
 Jupiter MOID = 2.01217 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.42909428172871E-15 -6.779313723532629E-15 -3.496431583402057E-12 -6.140869380546382E-15 -7.017419377685361E-13 3.033279856015129E-15
q -6.779313723532629E-15 1.955688019579049E-14 1.121616248384239E-11 1.679173768494425E-14 2.301971734899212E-12 -5.344092313398791E-15
tp -3.496431583402057E-12 1.121616248384239E-11 3.168061623015843E-8 6.522974674578345E-12 6.752272951229387E-9 8.67882739494511E-12
node -6.140869380546382E-15 1.679173768494425E-14 6.522974674578345E-12 4.287868120488541E-10 -4.158691705716946E-10 -2.493990028992144E-11
peri -7.017419377685361E-13 2.301971734899212E-12 6.752272951229387E-9 -4.158691705716946E-10 1.862851231645119E-9 2.627579653407755E-11
i 3.033279856015129E-15 -5.344092313398791E-15 8.67882739494511E-12 -2.493990028992144E-11 2.627579653407755E-11 5.172397807027721E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO366898  

154877 (2004 RA118)          Discovered 2004-Sep-07 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

Alternate Designations
 2004 RA118 = 1998 HJ21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-04 09:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin