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1568 Aisleen (1946 QB)
Classification: Main-belt Asteroid          SPK-ID: 2001568
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2542980209274125 3.7626e-08  
a 2.352051536942993 6.8652e-09 au
q 1.753929485979111 8.8388e-08 au
i 24.87190552815805 4.8835e-06 deg
node 146.1395168189844 8.9428e-06 deg
peri 229.1269419344069 1.2952e-05 deg
M 134.8734012859504 1.1654e-05 deg
tp 2458506.880297143915
(2019-Jan-23.38029714)
4.1896e-05 TDB
period 1317.554768648826
3.61
5.7685e-06
1.579e-08
d
yr
n .2732334234342197 1.1963e-09 deg/d
Q 2.950173587906875 8.611e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2285  
   data-arc span      26831 days (73.46 yr)  
   first obs. used      1946-08-21  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:58:37  

Additional Information
 Earth MOID = .815203 au 
 Jupiter MOID = 2.64455 au 
 T_jup = 3.392 
[ 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 11.7   n/a MPO263359  
diameter diameter 12.448 km 0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.683 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Malcolm, G. (2001) Minor Planet Bull. 28, 64.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Warner, Brian D. (2014) Minor Planet Bull. 41, 235-241.]
geometric albedo albedo 0.165   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1568 Aisleen (1946 QB)          Discovered 1946-Aug-21 by Johnson, E. L. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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