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120672 (1997 AK)
Classification: Main-belt Asteroid          SPK-ID: 2120672
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2699766242151683 4.6248e-08  
a 2.664356772989917 1.2391e-08 au
q 1.945042725713279 1.191e-07 au
i 2.175670356557442 5.191e-06 deg
node 322.0211324027051 0.00017434 deg
peri 173.4386527790964 0.00017485 deg
M 129.3293896452893 1.3506e-05 deg
tp 2458429.834362316839
(2018-Nov-07.33436232)
5.7718e-05 TDB
period 1588.49918127191
4.35
1.1082e-05
3.034e-08
d
yr
n .2266290119908959 1.581e-09 deg/d
Q 3.383670820266554 1.5737e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      9574 days (26.21 yr)  
   first obs. used      1993-04-16  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55732  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:34  

Additional Information
 Earth MOID = .959048 au 
 Jupiter MOID = 1.66465 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456904.5 (2014-Sep-04.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2708656440019567 4.5971e-08  
q 1.939575932536596 1.1844e-07 au
tp 2456843.543713879363
(2014-Jul-05.04371388)
5.2903e-05 TDB
node 322.1390621819198 0.00017471 deg
peri 172.9176380299815 0.00017521 deg
i 2.174810927769807 5.1881e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      9574 days (26.21 yr)  
   first obs. used      1993-04-16  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55732  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:34  

Additional Information
 Jupiter MOID = 1.66465 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.11334390017357E-15 -5.432280195765019E-15 7.486475687780398E-13 1.478707956118922E-14 1.415598373584691E-13 -1.290537123221894E-15
q -5.432280195765019E-15 1.402731874690374E-14 -1.838312702219331E-12 -3.245876916722533E-14 -3.440424411213311E-13 3.357951213880765E-15
tp 7.486475687780398E-13 -1.838312702219331E-12 2.798736582577674E-9 2.460382072738613E-11 7.558849234980912E-10 -1.497921006476437E-12
node 1.478707956118922E-14 -3.245876916722533E-14 2.460382072738613E-11 3.052475289687376E-8 -3.049467315911988E-8 2.948864762905155E-10
peri 1.415598373584691E-13 -3.440424411213311E-13 7.558849234980912E-10 -3.049467315911988E-8 3.069963694691413E-8 -2.950715574028318E-10
i -1.290537123221894E-15 3.357951213880765E-15 -1.497921006476437E-12 2.948864762905155E-10 -2.950715574028318E-10 2.691618081360674E-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 16.2   n/a MPO436582  
diameter diameter 1.368 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.285   0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120672 (1997 AK)          Discovered 1997-Jan-02 by Kobayashi, T. at Oizumi
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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