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85424 (1997 AA3)
Classification: Main-belt Asteroid          SPK-ID: 2085424
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2535426491745897 3.5882e-08  
a 3.125115802559836 1.9014e-08 au
q 2.332765663001441 1.1386e-07 au
i 15.37607307496025 6.1942e-06 deg
node 321.4887095634085 1.3819e-05 deg
peri 68.10675069013611 1.817e-05 deg
M 140.9474688114028 1.1622e-05 deg
tp 2458210.453998185695
(2018-Apr-01.95399819)
6.1858e-05 TDB
period 2017.890516598906
5.52
1.8416e-05
5.042e-08
d
yr
n .1784041289845443 1.6282e-09 deg/d
Q 3.917465942118232 2.3834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      8514 days (23.31 yr)  
   first obs. used      1997-01-04  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:31  

Additional Information
 Earth MOID = 1.38622 au 
 Jupiter MOID = 1.90359 au 
 T_jup = 3.111 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457240.5 (2015-Aug-06.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2530007871177367 3.572e-08  
q 2.334466297046082 1.1315e-07 au
tp 2458211.384473888268
(2018-Apr-02.88447389)
6.2016e-05 TDB
node 321.5024072618677 1.3821e-05 deg
peri 68.37552245136764 1.8208e-05 deg
i 15.37329167469617 6.1931e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      8514 days (23.31 yr)  
   first obs. used      1997-01-04  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:31  

Additional Information
 Jupiter MOID = 1.90359 au 
 T_jup = 3.111 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.275915630714253E-15 -4.010210000979628E-15 -9.287907497584008E-13 3.248329295843759E-16 -1.934824434235653E-13 -1.85647811952448E-15
q -4.010210000979628E-15 1.280202238375212E-14 3.246956092914152E-12 -8.582063030901277E-16 6.449708332006187E-13 6.450424859555969E-15
tp -9.287907497584008E-13 3.246956092914152E-12 3.846020754562379E-9 -9.730250506432303E-12 7.36002158230405E-10 -2.057299464951185E-12
node 3.248329295843759E-16 -8.582063030901277E-16 -9.730250506432303E-12 1.910176138625327E-10 -1.856767604800718E-10 1.656383943375328E-11
peri -1.934824434235653E-13 6.449708332006187E-13 7.36002158230405E-10 -1.856767604800718E-10 3.3152086220283E-10 -1.640989482844187E-11
i -1.85647811952448E-15 6.450424859555969E-15 -2.057299464951185E-12 1.656383943375328E-11 -1.640989482844187E-11 3.83543930038711E-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 13.6   n/a MPO432398  
rotation period rot_per 7.16 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

85424 (1997 AA3)          Discovered 1997-Jan-04 by Kobayashi, T. at Oizumi
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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