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39740 (1997 AG4)
Classification: Main-belt Asteroid          SPK-ID: 2039740
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712067267326224 7.3774e-08  
a 2.713772975181184 1.6047e-08 au
q 2.249156787004963 2.0336e-07 au
i 12.48268141598634 7.7106e-06 deg
node 304.9146981931087 2.3286e-05 deg
peri 183.6778860083516 2.9008e-05 deg
M 79.38595131443643 1.6372e-05 deg
tp 2458640.419295612118
(2019-Jun-05.91929561)
7.2985e-05 TDB
period 1632.896645228768
4.47
1.4483e-05
3.965e-08
d
yr
n .2204671073652456 1.9555e-09 deg/d
Q 3.178389163357405 1.8794e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1008  
   data-arc span      8423 days (23.06 yr)  
   first obs. used      1997-01-06  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47355  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:34:42  

Additional Information
 Earth MOID = 1.26442 au 
 Jupiter MOID = 1.89972 au 
 T_jup = 3.307 
[ 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 14.1   n/a MPO337580  
diameter diameter 3.545 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.424   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39740 (1997 AG4)          Discovered 1997-Jan-06 by Kobayashi, T. at Oizumi
Reference: 20020526/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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