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123731 (2001 AH8)
Classification: Main-belt Asteroid          SPK-ID: 2123731
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05005383814792549 4.8986e-08  
a 3.131198190325564 3.6228e-08 au
q 2.974469702897931 1.4806e-07 au
i 14.35756786357565 6.9298e-06 deg
node 283.5700981897622 2.3565e-05 deg
peri 144.6256640251646 8.836e-05 deg
M 216.1558332462349 8.7149e-05 deg
tp 2459809.137759452966
(2022-Aug-17.63775945)
0.00049751 TDB
period 2023.784488260788
5.54
3.5123e-05
9.616e-08
d
yr
n .1778845534631896 3.0872e-09 deg/d
Q 3.287926677753197 3.8042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:32:59  

Additional Information
 Earth MOID = 2.00053 au 
 Jupiter MOID = 1.92052 au 
 T_jup = 3.163 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457045.5 (2015-Jan-23.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05373564241378281 4.9218e-08  
q 2.957171606224038 1.5036e-07 au
tp 2457783.901258869524
(2017-Jan-30.40125887)
0.0004437 TDB
node 283.6210647418778 2.3607e-05 deg
peri 143.7743628559895 8.2442e-05 deg
i 14.35210488832911 6.9223e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:32:59  

Additional Information
 Jupiter MOID = 1.92052 au 
 T_jup = 3.163 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.422381182034925E-15 -7.221997763994324E-15 6.815895773106616E-12 2.490623266067816E-15 1.259504471668244E-12 1.086399261951658E-15
q -7.221997763994324E-15 2.260718518380969E-14 -1.430309616372678E-11 -2.626133553470664E-15 -2.759652272694314E-12 1.168603245153217E-15
tp 6.815895773106616E-12 -1.430309616372678E-11 1.968700549281165E-7 1.921308099011601E-12 3.507659761420464E-8 3.739631360388953E-11
node 2.490623266067816E-15 -2.626133553470664E-15 1.921308099011601E-12 5.572964156962973E-10 -5.394900098040345E-10 5.818467186469305E-11
peri 1.259504471668244E-12 -2.759652272694314E-12 3.507659761420464E-8 -5.394900098040345E-10 6.796672015058603E-9 -4.990544520260029E-11
i 1.086399261951658E-15 1.168603245153217E-15 3.739631360388953E-11 5.818467186469305E-11 -4.990544520260029E-11 4.791798780592759E-11

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 15.0   n/a MPO475084  
diameter diameter 5.804 km 0.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123731 (2001 AH8)          Discovered 2001-Jan-02 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2001 AH8 = 2004 RX339 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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