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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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 
[ show covariance matrix ]

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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