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JPL Small-Body Database Browser
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74540 (1999 JG22)
Classification: Main-belt Asteroid          SPK-ID: 2074540
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2590949391008436 3.924e-08  
a 2.302010150376567 9.312e-09 au
q 1.705570970655226 8.9666e-08 au
i 3.867841716307315 5.6107e-06 deg
node 340.0145972609557 5.9116e-05 deg
peri 322.9166513208498 6.0232e-05 deg
M 205.6994787094069 1.4416e-05 deg
tp 2459147.294541881122
(2020-Oct-24.79454188)
5.3044e-05 TDB
period 1275.731497410079
3.49
7.7408e-06
2.119e-08
d
yr
n .2821910415560425 1.7123e-09 deg/d
Q 2.898449330097908 1.1725e-08 au
  Orbit Determination Parameters
   # obs. used (total)      611  
   data-arc span      8182 days (22.40 yr)  
   first obs. used      1996-09-14  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59379  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:06:38  

Additional Information
 Earth MOID = .691602 au 
 Jupiter MOID = 2.35593 au 
 T_jup = 3.542 
[ 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 16.3   n/a MPO266273  
diameter diameter 1.321 km 0.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.254   0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74540 (1999 JG22)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JG22 = 2003 QA42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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