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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0920064806752009 4.8981e-08  
a 2.770338395193819 1.7399e-08 au
q 2.515449309172652 1.4068e-07 au
i 13.10572754947259 7.0919e-06 deg
node 19.00227457911121 1.71e-05 deg
peri 227.6921406511875 3.9053e-05 deg
M 328.0139659110874 3.599e-05 deg
tp 2459546.142706192785
(2021-Nov-27.64270619)
0.00016867 TDB
period 1684.215494789209
4.61
1.5867e-05
4.344e-08
d
yr
n .2137493694327142 2.0137e-09 deg/d
Q 3.025227481214987 1.9e-08 au
  Orbit Determination Parameters
   # obs. used (total)      597  
   data-arc span      9366 days (25.64 yr)  
   first obs. used      1995-10-18  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 01:52:35  

Additional Information
 Earth MOID = 1.52382 au 
 Jupiter MOID = 2.01186 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457428.5 (2016-Feb-10.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0935960266185754 4.8935e-08  
q 2.511962972630192 1.4106e-07 au
tp 2457859.101288695990
(2017-Apr-15.60128870)
0.00016282 TDB
node 19.03994665206846 1.7109e-05 deg
peri 227.2355182318341 3.8462e-05 deg
i 13.10308041091251 7.0904e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      597  
   data-arc span      9366 days (25.64 yr)  
   first obs. used      1995-10-18  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 01:52:35  

Additional Information
 Jupiter MOID = 2.01186 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.394634660997803E-15 -6.863093811110582E-15 -4.364841328736453E-12 -2.57161163988683E-15 -8.433119484045672E-13 1.251031063856714E-15
q -6.863093811110582E-15 1.989909088999965E-14 1.248187989090525E-11 6.981044762357982E-15 2.397859412615687E-12 -3.507413546377835E-15
tp -4.364841328736453E-12 1.248187989090525E-11 2.650975818924991E-8 -2.069734112093847E-12 5.608636292013217E-9 7.255695507651239E-12
node -2.57161163988683E-15 6.981044762357982E-15 -2.069734112093847E-12 2.927278959198225E-10 -2.852513150118769E-10 -3.03887278097475E-11
peri -8.433119484045672E-13 2.397859412615687E-12 5.608636292013217E-9 -2.852513150118769E-10 1.479291948168165E-9 3.114872163934235E-11
i 1.251031063856714E-15 -3.507413546377835E-15 7.255695507651239E-12 -3.03887278097475E-11 3.114872163934235E-11 5.027369045804699E-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 15.39   n/a MPCxxxxx  

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 2021-Jul-29 16:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin