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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .159268601628436 8.6538e-09  
a 2.358928567454741 4.9047e-09 au
q 1.983225313174855 1.9434e-08 au
i .2644494493225545 3.8378e-07 deg
node 267.6763597283453 0.00015106 deg
peri 166.7336716380719 0.00015025 deg
M 225.7518496424771 5.5617e-06 deg
tp 2459889.987801361879
(2022-Nov-06.48780136)
2.1129e-05 TDB
period 1323.337476286661
3.62
4.1272e-06
1.13e-08
d
yr
n .2720394505943977 8.4843e-10 deg/d
Q 2.734631821734627 5.6858e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3313  
   data-arc span      24701 days (67.63 yr)  
   first obs. used      1953-11-11  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:53:27  

Additional Information
 Earth MOID = .998048 au 
 Jupiter MOID = 2.51728 au 
 T_jup = 3.535 
[ 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 13.09   n/a E2021B10  
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. 2020-October); 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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