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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0274463189979561 4.6386e-08  
a 2.63374591033217 1.2464e-08 au
q 2.561459279917631 1.2852e-07 au
i 1.712450617608074 3.9479e-06 deg
node 155.4232940941611 0.00010289 deg
peri 188.867363425799 0.0001192 deg
M 1.663214044499556 5.8753e-05 deg
tp 2459193.287183540584
(2020-Dec-09.78718354)
0.00025481 TDB
period 1561.202500650464
4.27
1.1083e-05
3.034e-08
d
yr
n .2305914830715481 1.6369e-09 deg/d
Q 2.70603254074671 1.2806e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1386  
   data-arc span      8747 days (23.95 yr)  
   first obs. used      1997-01-31  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:43:37  

Additional Information
 Earth MOID = 1.55085 au 
 Jupiter MOID = 2.38044 au 
 T_jup = 3.397 
[ 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 14.81   n/a E2021B10  
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

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