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 ]  
164818 (1999 RR41)
Classification: Main-belt Asteroid          SPK-ID: 2164818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .16894868721662 6.1814e-08  
a 2.525839614998357 1.5722e-08 au
q 2.099102327924652 1.5469e-07 au
i 12.5816497928965 1.4286e-05 deg
node 354.5113279995909 2.1978e-05 deg
peri 275.342983958583 6.0294e-05 deg
M 165.1734513711795 5.357e-05 deg
tp 2458527.763757234159
(2019-Feb-13.26375723)
0.00021823 TDB
period 1466.246817422625
4.01
1.369e-05
3.748e-08
d
yr
n .2455248296005235 2.2924e-09 deg/d
Q 2.952576902072062 1.8378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      9773 days (26.76 yr)  
   first obs. used      1994-04-02  
   last obs. used      2021-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55033  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:11:38  

Additional Information
 Earth MOID = 1.12692 au 
 Jupiter MOID = 2.29877 au 
 T_jup = 3.400 
[ 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 16.5   n/a MPO436827  
diameter diameter 2.244 km 0.440 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

164818 (1999 RR41)          Discovered 1999-Sep-14 by Klet at Klet
Reference: 20071026/Numbers.arcLast Updated: 2007-10-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-06 12:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin