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66193 (1999 AF22)
Classification: Main-belt Asteroid          SPK-ID: 2066193
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .166754764497259 3.3243e-08  
a 2.633100097153513 1.1054e-08 au
q 2.194018110554969 8.5699e-08 au
i 4.829944803546352 3.6334e-06 deg
node 241.2092820923171 4.4145e-05 deg
peri 141.5750896348862 4.567e-05 deg
M 121.993445162142 1.2136e-05 deg
tp 2458671.648822144672
(2019-Jul-07.14882214)
5.128e-05 TDB
period 1560.628308962624
4.27
9.8271e-06
2.691e-08
d
yr
n .2306763230761194 1.4525e-09 deg/d
Q 3.072182083752057 1.2897e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1208  
   data-arc span      11474 days (31.41 yr)  
   first obs. used      1989-10-23  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:01:04  

Additional Information
 Earth MOID = 1.19879 au 
 Jupiter MOID = 2.39547 au 
 T_jup = 3.374 
[ 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 14.87   n/a MPCxxxxx  
diameter diameter 2.733 km 0.780 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.00 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:
[Warner, B.D (2011) Minor Planet Bull. 38, 25-31.]
geometric albedo albedo 0.342   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66193 (1999 AF22)          Discovered 1999-Jan-13 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AF22 = 1989 UO8 = 2002 YN12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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