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43911 (1995 WF22)
Classification: Main-belt Asteroid          SPK-ID: 2043911
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1470632201563021 5.8447e-08  
a 2.608656912240532 1.5751e-08 au
q 2.225019426443444 1.5459e-07 au
i 26.18779607621586 6.6281e-06 deg
node 229.3189144724383 9.7873e-06 deg
peri 355.6874637580915 2.1181e-05 deg
M 181.6948796650782 2.365e-05 deg
tp 2459962.728509058599
(2023-Jan-18.22850906)
0.00010506 TDB
period 1538.947747241742
4.21
1.3938e-05
3.816e-08
d
yr
n .233926071008732 2.1187e-09 deg/d
Q 2.992294398037621 1.8067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1200  
   data-arc span      9218 days (25.24 yr)  
   first obs. used      1995-11-17  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48088  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:23:58  

Additional Information
 Earth MOID = 1.21465 au 
 Jupiter MOID = 2.00608 au 
 T_jup = 3.252 
[ 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 14.18   n/a MPCxxxxx  
diameter diameter 8.709 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43911 (1995 WF22)          Discovered 1995-Nov-17 by Spacewatch at Kitt Peak
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WF22 = 1999 VT143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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