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 ]  
160158 (2001 RS121)
Classification: Main-belt Asteroid          SPK-ID: 2160158
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143093844696303 5.5826e-08  
a 2.137716286209571 1.2803e-08 au
q 1.893355253362251 1.268e-07 au
i 2.629789743675424 6.9546e-06 deg
node 40.79085481857312 8.4459e-05 deg
peri 252.1698590395757 9.2719e-05 deg
M 277.8368190877292 4.2882e-05 deg
tp 2458861.054314753224
(2020-Jan-12.55431475)
0.00013772 TDB
period 1141.625144860376
3.13
1.0256e-05
2.808e-08
d
yr
n .3153399358981613 2.8329e-09 deg/d
Q 2.382077319056891 1.4267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      7507 days (20.55 yr)  
   first obs. used      1998-10-17  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52564  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:33:01  

Additional Information
 Earth MOID = .878592 au 
 Jupiter MOID = 2.75748 au 
 T_jup = 3.706 
[ 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 17.0   n/a MPO379513  
diameter diameter 2.036 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160158 (2001 RS121)          Discovered 2001-Sep-12 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin