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2993 Wendy (1970 PA)
Classification: Main-belt Asteroid          SPK-ID: 2002993
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .194876694173425 5.1509e-08  
a 2.586912973692423 1.3982e-08 au
q 2.082783925264899 1.3597e-07 au
i 12.29142187275231 4.6774e-06 deg
node 313.3409186683635 2.3419e-05 deg
peri 74.60242838307394 2.5624e-05 deg
M 204.4965882002172 1.1846e-05 deg
tp 2459256.960465600955
(2021-Feb-11.46046560)
5.2841e-05 TDB
period 1519.746511546789
4.16
1.2321e-05
3.373e-08
d
yr
n .2368816097058148 1.9205e-09 deg/d
Q 3.091042022119946 1.6707e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1515  
   data-arc span      17910 days (49.03 yr)  
   first obs. used      1970-07-30  
   last obs. used      2019-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40089  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:28:34  

Additional Information
 Earth MOID = 1.12435 au 
 Jupiter MOID = 2.53792 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456921.5 (2014-Sep-21.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1959666440336802 5.1456e-08  
q 2.078566115320572 1.3575e-07 au
tp 2456220.283733022023
(2012-Oct-19.78373302)
4.384e-05 TDB
node 313.3823786533149 2.3421e-05 deg
peri 74.77115716693767 2.5602e-05 deg
i 12.29450575119614 4.6793e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1515  
   data-arc span      17910 days (49.03 yr)  
   first obs. used      1970-07-30  
   last obs. used      2019-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40089  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:28:34  

Additional Information
 Jupiter MOID = 2.53792 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.647722134713506E-15 -6.961773516902558E-15 -6.590804783610288E-13 2.296163657214349E-15 -2.127677150187088E-13 -5.697890337885498E-15
q -6.961773516902558E-15 1.842782593093193E-14 1.752249365523598E-12 -3.602675322973056E-15 5.733969559131649E-13 1.590658257335837E-14
tp -6.590804783610288E-13 1.752249365523598E-12 1.921915713291631E-9 3.184330139983508E-12 4.808447029610194E-10 2.036501671017088E-12
node 2.296163657214349E-15 -3.602675322973056E-15 3.184330139983508E-12 5.485237377099779E-10 -5.343614019574149E-10 3.485732772441545E-11
peri -2.127677150187088E-13 5.733969559131649E-13 4.808447029610194E-10 -5.343614019574149E-10 6.554463236939363E-10 -3.34087947850369E-11
i -5.697890337885498E-15 1.590658257335837E-14 2.036501671017088E-12 3.485732772441545E-11 -3.34087947850369E-11 2.189552811442644E-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 12.1   n/a MPO384778  
diameter diameter 11.209 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.456 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.169   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2993 Wendy (1970 PA)          Discovered 1970-Aug-04 by at Perth
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1970 PA = 1979 YJ2 = 1981 DG1 = A916 QA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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