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1024 Hale (A923 YO13)
Classification: Main-belt Asteroid          SPK-ID: 2001024
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2215448021032831 3.4305e-08  
a 2.868660130112953 1.2195e-08 au
q 2.233123389285501 1.0011e-07 au
i 16.06817149118434 4.3253e-06 deg
node 58.8197316674325 1.3686e-05 deg
peri 307.8537838636651 1.6564e-05 deg
M 335.9646814658075 1.1415e-05 deg
tp 2459118.985295052700
(2020-Sep-26.48529505)
5.6633e-05 TDB
period 1774.667814711573
4.86
1.1317e-05
3.098e-08
d
yr
n .2028548650151233 1.2936e-09 deg/d
Q 3.504196870940405 1.4897e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2657  
   data-arc span      33376 days (91.38 yr)  
   first obs. used      1928-12-08  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40726  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:17:37  

Additional Information
 Earth MOID = 1.2721 au 
 Jupiter MOID = 2.08104 au 
 T_jup = 3.205 
[ 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 10.8   n/a MPO492762  
diameter diameter 43.274 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.0 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Alkema, M.S. (2013) Minor Planet Bull. 40, 133-137.]
geometric albedo albedo 0.045   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1024 Hale (A923 YO13)          Discovered 1923-Dec-02 by Van Biesbroeck, G. at Williams Bay
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A923 YO13 = 2019 GN23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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