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 ]  
91571 (1999 RZ252)
Classification: Main-belt Asteroid          SPK-ID: 2091571
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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01221345659079426 4.6304e-08  
a 3.065361562940029 2.268e-08 au
q 3.027922902555971 1.4823e-07 au
i 10.19862318311352 4.5214e-06 deg
node 222.9103038262382 2.1908e-05 deg
peri 203.436249394244 0.0002033 deg
M 248.314234708901 0.00020563 deg
tp 2459608.657842611696
(2022-Jan-29.15784261)
0.0011233 TDB
period 1960.292994989746
5.37
2.1755e-05
5.956e-08
d
yr
n .1836460166516501 2.0381e-09 deg/d
Q 3.102800223324086 2.2957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      7634 days (20.90 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .544  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:17:56  

Additional Information
 Earth MOID = 2.03998 au 
 Jupiter MOID = 1.94442 au 
 T_jup = 3.208 
[ 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 14.2   n/a MPO264001  
diameter diameter 3.640 km 0.765 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.367   0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91571 (1999 RZ252)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ 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 2020-Sep-27 17:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin