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 ]  
185529 (2007 WE12)
Classification: Main-belt Asteroid          SPK-ID: 2185529
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09577428244326192 7.9304e-08  
a 3.171995417992407 3.5901e-08 au
q 2.86819983292087 2.5133e-07 au
i 10.47185457003134 6.4073e-06 deg
node 110.24633834 3.9963e-05 deg
peri 269.6658348429074 5.1557e-05 deg
M 107.8239645780705 3.3053e-05 deg
tp 2458382.469299035366
(2018-Sep-20.96929904)
0.00018919 TDB
period 2063.465698167428
5.65
3.5032e-05
9.591e-08
d
yr
n .1744637675924138 2.9619e-09 deg/d
Q 3.475791003063945 3.934e-08 au
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      6704 days (18.35 yr)  
   first obs. used      2001-09-25  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60178  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:06:16  

Additional Information
 Earth MOID = 1.89565 au 
 Jupiter MOID = 2.01278 au 
 T_jup = 3.169 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457457.5 (2016-Mar-10.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09462725545351094 7.9172e-08  
q 2.87096975853692 2.5017e-07 au
tp 2458384.191596845783
(2018-Sep-22.69159685)
0.0001913 TDB
node 110.26777365015 3.9973e-05 deg
peri 269.9343008446928 5.1849e-05 deg
i 10.47083480465087 6.4066e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      6704 days (18.35 yr)  
   first obs. used      2001-09-25  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60178  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:06:16  

Additional Information
 Jupiter MOID = 2.01278 au 
 T_jup = 3.169 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.268219868010892E-15 -1.964066197265354E-14 1.849163866248066E-12 1.570943263724592E-14 1.342685946913061E-14 -7.042446930266014E-15
q -1.964066197265354E-14 6.258438245150308E-14 -5.952833666888139E-12 -6.771152377035242E-14 -1.326996939403967E-13 2.519721712603863E-14
tp 1.849163866248066E-12 -5.952833666888139E-12 3.659665043656544E-8 4.172457703022439E-11 6.348903212090414E-9 -9.695988462176154E-12
node 1.570943263724592E-14 -6.771152377035242E-14 4.172457703022439E-11 1.597808285767078E-9 -1.562828969865769E-9 -2.497660700800817E-11
peri 1.342685946913061E-14 -1.326996939403967E-13 6.348903212090414E-9 -1.562828969865769E-9 2.688365459586884E-9 2.31039771200711E-11
i -7.042446930266014E-15 2.519721712603863E-14 -9.695988462176154E-12 -2.497660700800817E-11 2.31039771200711E-11 4.10447068276274E-11

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 15.2   n/a MPO470001  
diameter diameter 4.717 km 0.856 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

185529 (2007 WE12)          Discovered 2007-Nov-17 by CSS at Catalina
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2007 WE12 = 2003 AF63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-09 10:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin