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136628 (1994 PL21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2136628
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1520190342953245 4.7688e-08  
a 3.204672468392264 2.4645e-08 au
q 2.717501254514458 1.5773e-07 au
i 1.088147771471014 4.9548e-06 deg
node 129.0464046086684 0.00023877 deg
peri 214.0772990324187 0.00023927 deg
M 167.5429624985392 1.6194e-05 deg
tp 2458025.291247413757
(2017-Sep-28.79124741)
8.9142e-05 TDB
period 2095.433587275315
5.74
2.4172e-05
6.618e-08
d
yr
n .1718021521589271 1.9818e-09 deg/d
Q 3.69184368227007 2.8392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      607  
   data-arc span      15448 days (42.29 yr)  
   first obs. used      1977-10-16  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54666  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:41:35  

Additional Information
 Earth MOID = 1.70972 au 
 Jupiter MOID = 1.71213 au 
 T_jup = 3.175 
[ 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 15.0   n/a MPO453849  
diameter diameter 5.964 km 0.335 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136628 (1994 PL21)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1994 PL21 = 3067 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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