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 ]  
13532 (1991 RY8)
Classification: Main-belt Asteroid          SPK-ID: 2013532
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1377817081866645 3.2493e-08  
a 2.291767380882258 6.2824e-09 au
q 1.976003756377822 7.4256e-08 au
i 3.748378838464498 3.7575e-06 deg
node 8.344248482452308 5.4128e-05 deg
peri 10.66496255329728 5.5732e-05 deg
M 331.5404238550631 1.3245e-05 deg
tp 2458700.679798649637
(2019-Aug-05.17979865)
4.6678e-05 TDB
period 1267.226445334297
3.47
5.2107e-06
1.427e-08
d
yr
n .2840849804906267 1.1681e-09 deg/d
Q 2.607531005386693 7.148e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1615  
   data-arc span      10311 days (28.23 yr)  
   first obs. used      1991-09-11  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48474  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:35:37  

Additional Information
 Earth MOID = .977308 au 
 Jupiter MOID = 2.85225 au 
 T_jup = 3.582 
[ 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 14.5   n/a MPO431657  
diameter diameter 2.985 km 0.489 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.378   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13532 (1991 RY8)          Discovered 1991-Sep-11 by Holt, H. E. at Palomar
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RY8 = 1991 SK1 = 1997 HH11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 06:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin