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13629 (1995 WD2)
Classification: Main-belt Asteroid          SPK-ID: 2013629
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1654411826166344 3.666e-08  
a 2.327475818315559 5.78e-09 au
q 1.942415466421814 8.6379e-08 au
i 2.32855217026294 3.4021e-06 deg
node 222.7823757050513 9.7658e-05 deg
peri 263.5654103264033 9.8305e-05 deg
M 337.2269340654741 1.0491e-05 deg
tp 2459282.543692065362
(2021-Mar-09.04369207)
3.7861e-05 TDB
period 1296.958838500159
3.55
4.8312e-06
1.323e-08
d
yr
n .277572417345422 1.034e-09 deg/d
Q 2.712536170209304 6.7362e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1467  
   data-arc span      15857 days (43.41 yr)  
   first obs. used      1977-10-18  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:32:56  

Additional Information
 Earth MOID = .959252 au 
 Jupiter MOID = 2.3528 au 
 T_jup = 3.554 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456864.5 (2014-Jul-26.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1644999009714055 3.6618e-08  
q 1.944425386399948 8.6226e-08 au
tp 2456687.898200700065
(2014-Jan-30.39820070)
3.7416e-05 TDB
node 222.8207152012726 9.7625e-05 deg
peri 263.4234466479825 9.8285e-05 deg
i 2.328163896234426 3.4038e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1467  
   data-arc span      15857 days (43.41 yr)  
   first obs. used      1977-10-18  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:32:56  

Additional Information
 Jupiter MOID = 2.3528 au 
 T_jup = 3.554 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.3408843614993E-15 -3.152614082786498E-15 2.584308116376879E-13 1.51585824966067E-14 8.978246956937981E-14 -1.280653190525606E-15
q -3.152614082786498E-15 7.434920971443389E-15 -6.08709592426533E-13 -3.568866566925822E-14 -2.112054160437047E-13 3.081638759322927E-15
tp 2.584308116376879E-13 -6.08709592426533E-13 1.399984067408977E-9 -2.403600210465798E-12 4.405445363169212E-10 -1.260486506156016E-13
node 1.51585824966067E-14 -3.568866566925822E-14 -2.403600210465798E-12 9.530545841352892E-9 -9.522918232215402E-9 -3.377978148281842E-11
peri 8.978246956937981E-14 -2.112054160437047E-13 4.405445363169212E-10 -9.522918232215402E-9 9.65993849628348E-9 3.370286961392902E-11
i -1.280653190525606E-15 3.081638759322927E-15 -1.260486506156016E-13 -3.377978148281842E-11 3.370286961392902E-11 1.158558487428403E-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 14.99   n/a MPCxxxxx  
diameter diameter 3.186 km 0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.91630 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.209   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13629 (1995 WD2)          Discovered 1995-Nov-18 by Kobayashi, T. at Oizumi
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WD2 = 1977 UZ4 = 1982 BT11 = 1991 TU7 = 1993 FX24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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