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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1760935595853387 2.7363e-08  
a 2.435323598980848 7.9718e-09 au
q 2.006478797694133 6.94e-08 au
i 2.111546299703069 4.0031e-06 deg
node 350.4569139803098 7.6773e-05 deg
peri 303.1392326913435 7.7838e-05 deg
M 316.1539278808139 1.162e-05 deg
tp 2459565.568085885464
(2021-Dec-17.06808589)
4.492e-05 TDB
period 1388.140555745108
3.80
6.8159e-06
1.866e-08
d
yr
n .259339732212322 1.2734e-09 deg/d
Q 2.864168400267564 9.3755e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1545  
   data-arc span      10006 days (27.39 yr)  
   first obs. used      1994-03-10  
   last obs. used      2021-08-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50596  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:59:53  

Additional Information
 Earth MOID = .990965 au 
 Jupiter MOID = 2.32594 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457388.5 (2016-Jan-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1769631083374744 2.7353e-08  
q 2.004098984912909 6.94e-08 au
tp 2456787.807336856368
(2014-May-10.30733686)
4.4694e-05 TDB
node 350.5073012691744 7.6664e-05 deg
peri 302.9288346887959 7.7723e-05 deg
i 2.114170489058412 4.0041e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1545  
   data-arc span      10006 days (27.39 yr)  
   first obs. used      1994-03-10  
   last obs. used      2021-08-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50596  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:59:53  

Additional Information
 Jupiter MOID = 2.32594 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.481880098045066E-16 -1.891049952700561E-15 4.196493950967005E-13 -3.219126220464925E-15 1.234519895211576E-13 -1.891559674566539E-16
q -1.891049952700561E-15 4.81631974157005E-15 -1.068198851299998E-12 8.027636845157534E-15 -3.089328416191905E-13 5.709216010492239E-16
tp 4.196493950967005E-13 -1.068198851299998E-12 1.997587371083021E-9 -1.667879175701089E-11 5.764774843113273E-10 9.509681994897824E-14
node -3.219126220464925E-15 8.027636845157534E-15 -1.667879175701089E-11 5.877320794027688E-9 -5.877575503540812E-9 5.935949578760156E-11
peri 1.234519895211576E-13 -3.089328416191905E-13 5.764774843113273E-10 -5.877575503540812E-9 6.04087262449142E-9 -5.926602013032057E-11
i -1.891559674566539E-16 5.709216010492239E-16 9.509681994897824E-14 5.935949578760156E-11 -5.926602013032057E-11 1.603307668072856E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.14   n/a MPO636385  
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

Alternate Designations
 1998 FC58 = 1999 TB30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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