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JPL Small-Body Database Browser
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39417 (1100 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2039417
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08278008900287749 5.4345e-08  
a 2.675564872664777 1.5688e-08 au
q 2.454081374372614 1.4949e-07 au
i 9.368491132418486 5.7825e-06 deg
node 187.4010089186862 2.5406e-05 deg
peri .1150731249741899 3.5714e-05 deg
M 55.00840689349791 2.581e-05 deg
tp 2458756.242323361202
(2019-Sep-29.74232336)
0.00011401 TDB
period 1598.533179850387
4.38
1.406e-05
3.849e-08
d
yr
n .225206460859132 1.9808e-09 deg/d
Q 2.89704837095694 1.6987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      857  
   data-arc span      21764 days (59.59 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57365  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:43:02  

Additional Information
 Earth MOID = 1.45505 au 
 Jupiter MOID = 2.05879 au 
 T_jup = 3.355 
[ 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 14.9   n/a MPO436046  
diameter diameter 2.756 km 0.422 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39417 (1100 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1100 T-2 = 1999 RX161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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