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JPL Small-Body Database Browser
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74541 (1999 JT22)
Classification: Main-belt Asteroid          SPK-ID: 2074541
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1152720830234708 4.6734e-08  
a 3.136974135695788 2.4296e-08 au
q 2.775368592683383 1.4704e-07 au
i 2.253905893578891 4.0699e-06 deg
node 251.4024567286129 0.00013621 deg
peri 258.4050847539875 0.00013742 deg
M 272.8681473491146 2.0016e-05 deg
tp 2459091.678424133964
(2020-Aug-30.17842413)
0.00011507 TDB
period 2029.386812153708
5.56
2.3576e-05
6.455e-08
d
yr
n .1773934854824183 2.0608e-09 deg/d
Q 3.498579678708194 2.7096e-08 au
  Orbit Determination Parameters
   # obs. used (total)      932  
   data-arc span      7221 days (19.77 yr)  
   first obs. used      1999-04-15  
   last obs. used      2019-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54082  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:25:19  

Additional Information
 Earth MOID = 1.78812 au 
 Jupiter MOID = 1.52018 au 
 T_jup = 3.200 
[ 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 14.3   n/a MPO432297  
diameter diameter 8.998 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.026   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74541 (1999 JT22)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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