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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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2542980202368623 3.6278e-08  
a 2.352051536845237 6.6621e-09 au
q 1.753929487530424 8.4866e-08 au
i 24.87190532040446 4.8562e-06 deg
node 146.139515167777 8.1417e-06 deg
peri 229.1269436287222 1.234e-05 deg
M 134.8734011713981 1.1626e-05 deg
tp 2458506.880297593936
(2019-Jan-23.38029759)
4.1811e-05 TDB
period 1317.554768566685
3.61
5.5979e-06
1.533e-08
d
yr
n .273233423451254 1.1609e-09 deg/d
Q 2.95017358616005 8.3563e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2600  
   data-arc span      26991 days (73.90 yr)  
   first obs. used      1946-08-21  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:17:42  

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 6.6746 h n/a LCDB (Rev. 2020-October); 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.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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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