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21390 Shindo (1998 FV28)
Classification: Main-belt Asteroid          SPK-ID: 2021390
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418778890711782 3.2524e-08  
a 2.46805576007675 7.2917e-09 au
q 2.117893218727098 8.0831e-08 au
i 1.876198296626116 3.7755e-06 deg
node 61.80873512269845 0.00010091 deg
peri 59.53210528883021 0.00010168 deg
M 351.8095072821357 1.1818e-05 deg
tp 2459232.720954799918
(2021-Jan-18.22095480)
4.6493e-05 TDB
period 1416.220504374648
3.88
6.2762e-06
1.718e-08
d
yr
n .2541977035976916 1.1265e-09 deg/d
Q 2.818218301426402 8.3262e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1735  
   data-arc span      11397 days (31.20 yr)  
   first obs. used      1989-12-30  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48905  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:44:39  

Additional Information
 Earth MOID = 1.13441 au 
 Jupiter MOID = 2.24972 au 
 T_jup = 3.471 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO299116  
diameter diameter 3.341 km 0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21390 Shindo           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Shindo Akihiko (b. 1960), a 2004 Intel International Science and Engineering Fair Excellence in Teaching Award finalist, is a teacher at the Okayama Ichinomiya Senior High School, Souja, Okayama, Japan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

Alternate Designations
 1998 FV28 = 1989 YT3 = 1990 BM6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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