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4419 Allancook (1932 HD)
Classification: Main-belt Asteroid          SPK-ID: 2004419
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2154091823136521 3.5707e-08  
a 3.055036270432256 1.4321e-08 au
q 2.396953405479894 1.0813e-07 au
i .4098659875115735 3.2677e-06 deg
node 231.7173913636138 0.00060501 deg
peri 295.4832586144885 0.00060506 deg
M 190.6116611037373 9.5605e-06 deg
tp 2459918.206887806801
(2022-Dec-04.70688781)
5.5749e-05 TDB
period 1950.396832291847
5.34
1.3714e-05
3.755e-08
d
yr
n .1845778223383269 1.2979e-09 deg/d
Q 3.713119135384617 1.7406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2370  
   data-arc span      32033 days (87.70 yr)  
   first obs. used      1932-04-24  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48183  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:12:53  

Additional Information
 Earth MOID = 1.40394 au 
 Jupiter MOID = 1.26563 au 
 T_jup = 3.200 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5   n/a MPO309183  
rotation period rot_per 5.2750 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Odden, C.; French, J.; Briggs, J. (2012) Minor Planet Bull. 39, 236-238.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

4419 Allancook (1932 HD)          Discovered 1932-Apr-24 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1932 HD = 1953 DH = 1985 CK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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