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JPL Small-Body Database Browser
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172073 (2002 AF85)
Classification: Main-belt Asteroid          SPK-ID: 2172073
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08894656258334661 6.8552e-08  
a 3.086479132135247 4.1331e-08 au
q 2.811947422846586 2.2366e-07 au
i 19.38301337942318 7.5609e-06 deg
node 128.2040227644378 2.0043e-05 deg
peri 204.927630490195 4.3224e-05 deg
M 273.0504781854329 4.1847e-05 deg
tp 2459478.863617589622
(2021-Sep-21.36361759)
0.00023321 TDB
period 1980.584812180216
5.42
3.9783e-05
1.089e-07
d
yr
n .1817644959135652 3.651e-09 deg/d
Q 3.361010841423908 4.5008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7204 days (19.72 yr)  
   first obs. used      1999-07-13  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .74401  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:51:01  

Additional Information
 Earth MOID = 1.80865 au 
 Jupiter MOID = 1.97219 au 
 T_jup = 3.133 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456524.5 (2013-Aug-20.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08792071050552129 6.8493e-08  
q 2.814925037107669 2.2305e-07 au
tp 2457503.596590786432
(2016-Apr-25.09659079)
0.00022563 TDB
node 128.2237264014952 2.005e-05 deg
peri 205.9906728818753 4.363e-05 deg
i 19.3792227758036 7.5593e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7204 days (19.72 yr)  
   first obs. used      1999-07-13  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .74401  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:51:01  

Additional Information
 Jupiter MOID = 1.97219 au 
 T_jup = 3.133 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.691232801133419E-15 -1.506522269886713E-14 4.149577913213985E-13 -2.322986907943294E-14 9.485832379099352E-14 -2.287820400252621E-15
q -1.506522269886713E-14 4.975137516141211E-14 6.389455344346396E-14 8.404042180747159E-14 -1.963438889104945E-13 1.490640327985839E-14
tp 4.149577913213985E-13 6.389455344346396E-14 5.091085302275307E-8 2.558852109642148E-11 8.765946192576807E-9 -1.224719734319183E-11
node -2.322986907943294E-14 8.404042180747159E-14 2.558852109642148E-11 4.019956299044633E-10 -3.748102570484392E-10 2.152628897408498E-11
peri 9.485832379099352E-14 -1.963438889104945E-13 8.765946192576807E-9 -3.748102570484392E-10 1.903581801433756E-9 -2.29447547753722E-11
i -2.287820400252621E-15 1.490640327985839E-14 -1.224719734319183E-11 2.152628897408498E-11 -2.29447547753722E-11 5.714287810255482E-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 14.8   n/a MPO260218  
diameter diameter 6.072 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172073 (2002 AF85)          Discovered 2002-Jan-09 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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