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21336 Andyblanchard (1997 BU8)
Classification: Main-belt Asteroid          SPK-ID: 2021336
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02814059670146547 4.64e-08  
a 2.635489373701729 1.2615e-08 au
q 2.561325130125391 1.2874e-07 au
i 1.711368277056395 4.0054e-06 deg
node 155.4346053074976 0.00010448 deg
peri 188.7812825525614 0.00012043 deg
M 315.6686511871608 5.8531e-05 deg
tp 2459192.941518678918
(2020-Dec-09.44151868)
0.00025369 TDB
period 1562.75296330135
4.28
1.1221e-05
3.072e-08
d
yr
n .2303627050813534 1.654e-09 deg/d
Q 2.709653617278067 1.297e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1356  
   data-arc span      8672 days (23.74 yr)  
   first obs. used      1997-01-31  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:57:36  

Additional Information
 Earth MOID = 1.55262 au 
 Jupiter MOID = 2.38124 au 
 T_jup = 3.397 
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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 14.8   n/a MPO474046  
diameter diameter 2.733 km 0.519 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.284   0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21336 Andyblanchard           Discovered 1997 Jan. 31 by Spacewatch at Kitt Peak.
Andy Blanchard (b. 1956) founded AstroCATS, an annual telescope exhibit, in 2013, and won a Service Award from the Royal Astronomical Society of Canada in 2016. Name suggested by R. and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-06-20Last Updated: 2016-08-22

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Alternate Designations
 1997 BU8 = 1998 KF37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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