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21152 (1993 MB1)
Classification: Main-belt Asteroid          SPK-ID: 2021152
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144093054140466 5.3037e-08  
a 2.568247692667799 2.1033e-08 AU
q 2.19818103884209 1.3388e-07 AU
i 13.58156235243331 7.7664e-06 deg
node 131.5674717996086 2.8149e-05 deg
peri 121.1219626878348 4.2459e-05 deg
M 85.49901540973441 3.201e-05 deg
tp 2456643.463678374436
(2013-Dec-16.96367837)
0.00013286 JED
period 1503.328139736321
4.12
1.8468e-05
5.056e-08
d
yr
n .2394686765213766 2.9418e-09 deg/d
Q 2.938314346493506 2.4064e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      842  
   data-arc span      21746 days (59.54 yr)  
   first obs. used      1955-03-25  
   last obs. used      2014-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49233  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:37:59  

Additional Information
 Earth MOID = 1.21743 AU 
 T_jup = 3.378 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO313588  

21152 (1993 MB1)          Discovered 1993-Jun-17 by Holt, H. E. at Palomar (675)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 MB1 = 2000 BZ5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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