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 ]  
21031 (1989 TO15)
Classification: Main-belt Asteroid          SPK-ID: 2021031
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2308027232642721 2.7899e-08  
a 2.31017422062241 6.8195e-09 au
q 1.77697971928784 6.4402e-08 au
i 2.580418813885192 4.551e-06 deg
node 199.292240677249 7.608e-05 deg
peri 221.4263815441379 7.6884e-05 deg
M 342.3389532045795 1.1639e-05 deg
tp 2459459.418660357316
(2021-Sep-01.91866036)		 4.1599e-05 TDB
period 1282.524076347901
3.51		 5.6789e-06
1.555e-08		 d
yr
n .2806964848762382 1.2429e-09 deg/d
Q 2.84336872195698 8.3935e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1251  
   data-arc span      10812 days (29.60 yr)  
   first obs. used      1989-10-03  
   last obs. used      2019-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53551  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:36:51  

Additional Information
 Earth MOID = .790269 au 
 Jupiter MOID = 2.4992 au 
 T_jup = 3.548 
[ 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 15.71   n/a MPCxxxxx  
diameter diameter 1.794 km 0.365 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.346   0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21031 (1989 TO15)          Discovered 1989-Oct-03 by Debehogne, H. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 TO15 = 1994 CW2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-01 05:46 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin