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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1416539358449221 3.3203e-08  
a 2.467341110865873 1.0833e-08 au
q 2.11783253143974 8.3637e-08 au
i 1.876394705484801 4.5442e-06 deg
node 61.80974670733209 0.00010808 deg
peri 59.67540400629592 0.00010965 deg
M 199.0840192238283 2.0977e-05 deg
tp 2459233.259822026728
(2021-Jan-18.75982203)
8.4958e-05 TDB
period 1415.605428565076
3.88
9.3231e-06
2.553e-08
d
yr
n .2543081516471103 1.6749e-09 deg/d
Q 2.816849690292007 1.2368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1348  
   data-arc span      10894 days (29.83 yr)  
   first obs. used      1989-12-30  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52482  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:27:51  

Additional Information
 Earth MOID = 1.13476 au 
 Jupiter MOID = 2.25259 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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