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215539 (2002 WN12)
Classification: Main-belt Asteroid          SPK-ID: 2215539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2429525281271019 5.8788e-08  
a 2.562312622628992 1.6265e-08 au
q 1.939792293109294 1.5535e-07 au
i 17.14910908019834 5.587e-06 deg
node 118.9235233554514 2.1146e-05 deg
peri 273.0523849474423 2.463e-05 deg
M 119.5283285046978 1.4737e-05 deg
tp 2458503.089502517326
(2019-Jan-19.58950252)
5.8149e-05 TDB
period 1498.119996605866
4.10
1.4265e-05
3.906e-08
d
yr
n .240301178020195 2.2881e-09 deg/d
Q 3.184832952148691 2.0217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      887  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1998-12-22  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45234  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 09:19:39  

Additional Information
 Earth MOID = 1.03239 au 
 Jupiter MOID = 2.49512 au 
 T_jup = 3.332 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457328.5 (2015-Nov-02.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2409414797323071 5.8619e-08  
q 1.946397751764987 1.5455e-07 au
tp 2457002.478114129979
(2014-Dec-10.97811413)
5.1106e-05 TDB
node 119.0892961462965 2.1106e-05 deg
peri 272.7090931744569 2.4699e-05 deg
i 17.15773525778393 5.5927e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      887  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1998-12-22  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45234  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 09:19:39  

Additional Information
 Jupiter MOID = 2.49512 au 
 T_jup = 3.332 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.436133546468267E-15 -9.033980389705078E-15 -1.421740085170913E-12 3.922184367877085E-14 -4.174235860893209E-13 -1.196348289975871E-14
q -9.033980389705078E-15 2.388567492757965E-14 3.934371057339102E-12 -1.035972903148465E-13 1.148846671860985E-12 3.317759097653979E-14
tp -1.421740085170913E-12 3.934371057339102E-12 2.611847959101415E-9 -2.295143207769436E-11 7.005221451544576E-10 9.792034775681061E-12
node 3.922184367877085E-14 -1.035972903148465E-13 -2.295143207769436E-11 4.454470131929852E-10 -4.313290073862365E-10 3.75823809440499E-11
peri -4.174235860893209E-13 1.148846671860985E-12 7.005221451544576E-10 -4.313290073862365E-10 6.100384489787865E-10 -3.330983352317073E-11
i -1.196348289975871E-14 3.317759097653979E-14 9.792034775681061E-12 3.75823809440499E-11 -3.330983352317073E-11 3.127779581183539E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO360128  
diameter diameter 2.852 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.198   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215539 (2002 WN12)          Discovered 2002-Nov-27 by LONEOS at Anderson Mesa
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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