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21401 Justinkovac (1998 FC58)
Classification: Main-belt Asteroid          SPK-ID: 2021401
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1760679643546668 3.6856e-08  
a 2.435691302862395 9.9688e-09 au
q 2.006844093371047 8.8704e-08 au
i 2.111516687222758 4.9028e-06 deg
node 350.4564744492194 8.6622e-05 deg
peri 303.0865695933647 8.7604e-05 deg
M 265.3768131744419 1.353e-05 deg
tp 2459565.444535229966
(2021-Dec-16.94453523)
5.3075e-05 TDB
period 1388.454955813235
3.80
8.524e-06
2.334e-08
d
yr
n .2592810076356734 1.5918e-09 deg/d
Q 2.864538512353743 1.1724e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1242  
   data-arc span      9564 days (26.18 yr)  
   first obs. used      1994-03-10  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:57:14  

Additional Information
 Earth MOID = .989765 au 
 Jupiter MOID = 2.3264 au 
 T_jup = 3.482 
[ 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 15.1   n/a MPO452472  
diameter diameter 2.250 km 0.554 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.383   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21401 Justinkovac           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Justin Alexander Kovac (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his earth and planetary science project. He attends the Montgomery Blair High School, Silver Spring, Maryland.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

[ show close-approach data ]
Alternate Designations
 1998 FC58 = 1999 TB30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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