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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2154091820797509 3.5491e-08  
a 3.055036270381732 1.4274e-08 au
q 2.39695340615483 1.0756e-07 au
i .4098662009117147 3.2437e-06 deg
node 231.7174376109691 0.00059956 deg
peri 295.4832123649695 0.0005996 deg
M 190.6116611407257 9.5395e-06 deg
tp 2459918.206887583642
(2022-Dec-04.70688758)
5.5673e-05 TDB
period 1950.396832243463
5.34
1.3669e-05
3.742e-08
d
yr
n .1845778223429057 1.2936e-09 deg/d
Q 3.713119134608633 1.7349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2425  
   data-arc span      32244 days (88.28 yr)  
   first obs. used      1932-04-24  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48118  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:15:35  

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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