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43388 (2000 WA61)
Classification: Main-belt Asteroid          SPK-ID: 2043388
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04848046617686237 3.6874e-08  
a 2.305152707833773 7.6943e-09 au
q 2.193397829949135 8.4519e-08 au
i 7.267471259271932 3.3438e-06 deg
node 105.0810009975574 3.0324e-05 deg
peri 87.14485872337637 4.6282e-05 deg
M 157.6051488831325 3.581e-05 deg
tp 2458640.850810296833
(2019-Jun-06.35081030)
0.00012676 TDB
period 1278.344709680373
3.50
6.4004e-06
1.752e-08
d
yr
n .2816141822106897 1.41e-09 deg/d
Q 2.416907585718411 8.0673e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1284  
   data-arc span      8354 days (22.87 yr)  
   first obs. used      1998-02-22  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:19:32  

Additional Information
 Earth MOID = 1.2059 au 
 Jupiter MOID = 2.56208 au 
 T_jup = 3.576 
[ show covariance matrix ]

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 15.22   n/a E2021B10  
diameter diameter 2.486 km 0.694 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.272 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.286   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43388 (2000 WA61)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WA61 = 1998 FB85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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