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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 ]

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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 
[ 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 13.6   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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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