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22462 (1997 AF7)
Classification: Main-belt Asteroid          SPK-ID: 2022462
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553332285644517 3.5482e-08  
a 2.422152354444054 8.4949e-09 au
q 2.045911609153271 8.4433e-08 au
i 3.840164217629139 3.8917e-06 deg
node 141.7856496344936 6.0652e-05 deg
peri 359.985905466777 6.21e-05 deg
M 117.0110163123304 1.3715e-05 deg
tp 2458752.967207753946
(2019-Sep-26.46720775)
5.1693e-05 TDB
period 1376.894332568939
3.77
7.2435e-06
1.983e-08
d
yr
n .2614579721076565 1.3755e-09 deg/d
Q 2.798393099734837 9.8145e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1103  
   data-arc span      11085 days (30.35 yr)  
   first obs. used      1990-05-01  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56943  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:36  

Additional Information
 Earth MOID = 1.0586 au 
 Jupiter MOID = 2.21609 au 
 T_jup = 3.493 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO467975  
diameter diameter 3.781 km 0.569 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.3158 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.071   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22462 (1997 AF7)          Discovered 1997-Jan-09 by Kobayashi, T. at Oizumi
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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