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47091 (1999 AP9)
Classification: Main-belt Asteroid          SPK-ID: 2047091
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03720946101217034 2.9073e-08  
a 2.941372576742366 1.6013e-08 au
q 2.831925688525804 8.8223e-08 au
i 1.583131324703147 7.7988e-06 deg
node 191.0357848971897 0.00012046 deg
peri 86.95498438291089 0.00018201 deg
M 277.464044789595 0.00013827 deg
tp 2459422.939156263592
(2021-Jul-27.43915626)
0.00070735 TDB
period 1842.567834432979
5.04
1.5047e-05
4.12e-08
d
yr
n .1953795096563076 1.5955e-09 deg/d
Q 3.050819464958928 1.6609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1392  
   data-arc span      10049 days (27.51 yr)  
   first obs. used      1992-10-23  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49642  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:36:47  

Additional Information
 Earth MOID = 1.81608 au 
 Jupiter MOID = 1.98329 au 
 T_jup = 3.271 
[ 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 13.8   n/a MPO385117  
diameter diameter 5.257 km 0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.176   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

47091 (1999 AP9)          Discovered 1999-Jan-10 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AP9 = 2000 ES47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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