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227453 (2005 WR74)
Classification: Main-belt Asteroid          SPK-ID: 2227453
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04878149900059203 5.3193e-08  
a 2.634069010070084 2.4025e-08 au
q 2.505575175287859 1.3558e-07 au
i 15.42188818971586 4.2034e-06 deg
node 122.2214529821863 2.1113e-05 deg
peri 302.0938155992116 6.0039e-05 deg
M 187.1382912924591 5.9903e-05 deg
tp 2459950.282761199224
(2023-Jan-05.78276120)
0.00026484 TDB
period 1561.489794644992
4.28
2.1363e-05
5.849e-08
d
yr
n .2305490572109994 3.1542e-09 deg/d
Q 2.762562844852308 2.5197e-08 au
  Orbit Determination Parameters
   # obs. used (total)      600  
   data-arc span      6712 days (18.38 yr)  
   first obs. used      2002-01-09  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4943  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:26:45  

Additional Information
 Earth MOID = 1.54968 au 
 Jupiter MOID = 2.3972 au 
 T_jup = 3.346 
[ 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 15.58   n/a E2021B55  
diameter diameter 2.625 km 0.536 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.177   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227453 (2005 WR74)          Discovered 2005-Nov-28 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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