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 ]  
59912 (1999 RU156)
Classification: Main-belt Asteroid          SPK-ID: 2059912
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144141252683058 3.6105e-08  
a 3.055423173376694 2.3727e-08 au
q 2.615010649689333 1.1443e-07 au
i 5.086907366391857 5.7413e-06 deg
node 187.9143800797402 4.6481e-05 deg
peri 100.3329372331667 5.0681e-05 deg
M .7869415620705461 2.0939e-05 deg
tp 2458996.235722475578
(2020-May-26.73572248)
0.00011345 TDB
period 1950.767353998546
5.34
2.2723e-05
6.221e-08
d
yr
n .1845427642932907 2.1496e-09 deg/d
Q 3.495835697064055 2.7147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1997-03-11  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57637  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:16:06  

Additional Information
 Earth MOID = 1.60498 au 
 Jupiter MOID = 1.70016 au 
 T_jup = 3.214 
[ 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 14.6   n/a MPO436201  
diameter diameter 6.558 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59912 (1999 RU156)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RU156 = 1997 EV45 
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-29 10:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin