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49458 (1999 AH2)
Classification: Main-belt Asteroid          SPK-ID: 2049458
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1138703834651408 2.9214e-08  
a 2.600289718743057 9.8945e-09 au
q 2.304193731349322 7.4855e-08 au
i 4.005325750466966 3.4657e-06 deg
node 20.96784254029057 5.183e-05 deg
peri 30.32087564407621 5.5908e-05 deg
M 86.56103460799675 1.9629e-05 deg
tp 2458632.243032118286
(2019-May-28.74303212)
8.3245e-05 TDB
period 1531.549490342732
4.19
8.7417e-06
2.393e-08
d
yr
n .235056067250846 1.3416e-09 deg/d
Q 2.896385706136791 1.1021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1811  
   data-arc span      10715 days (29.34 yr)  
   first obs. used      1991-02-20  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:32  

Additional Information
 Earth MOID = 1.31569 au 
 Jupiter MOID = 2.44206 au 
 T_jup = 3.402 
[ 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 14.5   n/a MPO452842  
diameter diameter 3.254 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.348   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49458 (1999 AH2)          Discovered 1999-Jan-09 by Kobayashi, T. at Oizumi
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AH2 = 2000 GH73 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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