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 ]  
66491 (1999 RG54)
Classification: Main-belt Asteroid          SPK-ID: 2066491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3163928612608475 3.9579e-08  
a 2.440458290545299 1.1033e-08 au
q 1.668314709211915 9.6877e-08 au
i 3.765801591460301 4.2405e-06 deg
node 98.07868995210177 6.5863e-05 deg
peri 281.41329047101 6.656e-05 deg
M 234.0147773107839 1.6036e-05 deg
tp 2459883.829406549564
(2022-Oct-31.32940655)
6.4955e-05 TDB
period 1392.533049615032
3.81
9.4432e-06
2.585e-08
d
yr
n .2585216918905605 1.7531e-09 deg/d
Q 3.212601871878682 1.4524e-08 au
  Orbit Determination Parameters
   # obs. used (total)      768  
   data-arc span      13428 days (36.76 yr)  
   first obs. used      1984-09-05  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:32:11  

Additional Information
 Earth MOID = .675188 au 
 Jupiter MOID = 2.25681 au 
 T_jup = 3.429 
[ 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 15.68   n/a E2021B10  
rotation period rot_per 2.868 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

66491 (1999 RG54)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RG54 = 1984 RL = 1993 BD10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 23:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin