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 ]  
120749 (1997 WR12)
Classification: Main-belt Asteroid          SPK-ID: 2120749
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1026878981946232 7.4113e-08  
a 2.455635620922276 1.416e-08 au
q 2.203471560277919 1.8005e-07 au
i .9550071288715344 4.6599e-06 deg
node 267.5186732352639 0.00043089 deg
peri 205.3626481497828 0.00043341 deg
M 248.6229755009126 4.56e-05 deg
tp 2459435.347947162003
(2021-Aug-08.84794716)
0.00017919 TDB
period 1405.543573123592
3.85
1.2157e-05
3.328e-08
d
yr
n .2561286657232252 2.2154e-09 deg/d
Q 2.707799681566633 1.5614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      8337 days (22.83 yr)  
   first obs. used      1997-10-01  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62435  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:10:42  

Additional Information
 Earth MOID = 1.22006 au 
 Jupiter MOID = 2.37024 au 
 T_jup = 3.485 
[ 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 16.3   n/a MPO436583  
diameter diameter 1.628 km 0.726 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.183   0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120749 (1997 WR12)          Discovered 1997-Nov-23 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1997 WR12 = 2001 VD110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-25 23:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin