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JPL Small-Body Database Browser
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1045 Michela (A924 WN)
Classification: Main-belt Asteroid          SPK-ID: 2001045
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597921208015917 2.4199e-08  
a 2.357917299936281 5.3732e-09 au
q 1.9811406939047 5.6802e-08 au
i .2648165838419457 2.7874e-06 deg
node 267.6861158556978 0.00076777 deg
peri 166.8181836886392 0.00076786 deg
M 117.8588419186775 1.1812e-05 deg
tp 2458567.536835860313
(2019-Mar-25.03683586)		 4.2941e-05 TDB
period 1322.486599671794
3.62		 4.5205e-06
1.238e-08		 d
yr
n .272214478460003 9.3047e-10 deg/d
Q 2.734693905967863 6.2318e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2969  
   data-arc span      24274 days (66.46 yr)  
   first obs. used      1953-11-11  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44338  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:17:58  

Additional Information
 Earth MOID = .996156 au 
 Jupiter MOID = 2.51644 au 
 T_jup = 3.536 
[ 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 13.0   n/a MPO421637  
diameter diameter 6.104 km 0.265 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.7010 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Benishek, V. (2019) Minor Planet Bull. 46, 208-210.]
geometric albedo albedo 0.328   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1045 Michela (A924 WN)          Discovered 1924-Nov-19 by Van Biesbroeck, G. at Williams Bay
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A924 WN = 1953 VB2 = 1964 XJ = 1976 AL 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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