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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
59926 (1999 RD173)
Classification: Main-belt Asteroid          SPK-ID: 2059926
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09967102524155565 5.1137e-08  
a 3.196785018041997 2.8104e-08 au
q 2.878158177816906 1.6858e-07 au
i 16.0664461239941 5.6826e-06 deg
node 14.13160089451283 1.8514e-05 deg
peri 303.1308968790086 3.164e-05 deg
M 246.6027120774937 2.7117e-05 deg
tp 2459658.110502743619
(2022-Mar-19.61050274)
0.00016014 TDB
period 2087.702319207906
5.72
2.7531e-05
7.538e-08
d
yr
n .1724383771995748 2.274e-09 deg/d
Q 3.515411858267087 3.0905e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      7449 days (20.39 yr)  
   first obs. used      1999-09-09  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53846  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:57:04  

Additional Information
 Earth MOID = 1.90287 au 
 Jupiter MOID = 1.92766 au 
 T_jup = 3.127 
[ 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 MPO432153  
diameter diameter 8.208 km 0.332 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59926 (1999 RD173)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RD173 = 2000 XN23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-30 17:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin