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21241 (1995 WN33)
Classification: Main-belt Asteroid          SPK-ID: 2021241
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .122496857397719 2.8726e-08  
a 2.598287787505609 9.8048e-09 au
q 2.2800056989213 7.7273e-08 au
i 12.56482978113516 5.4311e-06 deg
node 207.7995260697247 1.4442e-05 deg
peri 270.2159711670811 2.7172e-05 deg
M 337.2099550269443 2.3437e-05 deg
tp 2459493.343836623316
(2021-Oct-05.84383662)
9.9694e-05 TDB
period 1529.781148989068
4.19
8.6591e-06
2.371e-08
d
yr
n .2353277789034728 1.332e-09 deg/d
Q 2.916569876089918 1.1006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1608  
   data-arc span      10703 days (29.30 yr)  
   first obs. used      1991-11-06  
   last obs. used      2021-02-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:31:36  

Additional Information
 Earth MOID = 1.33734 au 
 Jupiter MOID = 2.27412 au 
 T_jup = 3.372 
[ 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 14.28   n/a E2021B10  
diameter diameter 3.966 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21241 (1995 WN33)          Discovered 1995-Nov-20 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WN33 = 1991 VZ12 = 1993 HU6 = 2007 RD276 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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