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21151 (1993 LO1)
Classification: Main-belt Asteroid          SPK-ID: 2021151
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2659818382159195 3.2714e-08  
a 2.620656920428829 1.1308e-08 au
q 1.923609775399898 8.4105e-08 au
i 10.73822713831454 3.6216e-06 deg
node 311.750682443713 2.0507e-05 deg
peri 293.0620153099438 2.2174e-05 deg
M 166.8582884375104 1.1043e-05 deg
tp 2458482.277568293812
(2018-Dec-29.77756829)
4.5763e-05 TDB
period 1549.57885422072
4.24
1.003e-05
2.746e-08
d
yr
n .2323211877985024 1.5037e-09 deg/d
Q 3.317704065457761 1.4316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1431  
   data-arc span      22022 days (60.29 yr)  
   first obs. used      1960-10-22  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47492  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:40:34  

Additional Information
 Earth MOID = .938385 au 
 Jupiter MOID = 1.88465 au 
 T_jup = 3.330 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.14   n/a E2021B10  
diameter diameter 3.938 km 0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.326   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21151 (1993 LO1)          Discovered 1993-Jun-13 by McNaught, R. H. at Siding Spring
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 LO1 = 1998 QS76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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