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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1468987294974572 5.8443e-08  
a 2.609082366369297 1.575e-08 au
q 2.225811481595429 1.5461e-07 au
i 26.18462314313452 6.6275e-06 deg
node 229.3170376034161 9.7884e-06 deg
peri 355.6575759004448 2.1201e-05 deg
M 227.5726117335059 2.3903e-05 deg
tp 2459962.746361597438
(2023-Jan-18.24636160)
0.00010517 TDB
period 1539.324250394918
4.21
1.3938e-05
3.816e-08
d
yr
n .2338688550561333 2.1176e-09 deg/d
Q 2.992353251143166 1.8063e-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 = 1.21714 au 
 Jupiter MOID = 2.00484 au 
 T_jup = 3.251 
[ 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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