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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150875052843895 3.5981e-08  
a 3.056406331232675 1.4557e-08 au
q 2.399011518312425 1.0928e-07 au
i .4098277800125155 3.4707e-06 deg
node 231.716977039404 0.00060537 deg
peri 295.6160284193908 0.00060542 deg
M 116.6267106767253 9.3648e-06 deg
tp 2457968.218333808581
(2017-Aug-02.71833381)
4.8655e-05 TDB
period 1951.708991089091
5.34
1.3943e-05
3.817e-08
d
yr
n .1844537283189504 1.3177e-09 deg/d
Q 3.713801144152924 1.7688e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2288  
   data-arc span      31923 days (87.40 yr)  
   first obs. used      1932-04-24  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47821  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:46:01  

Additional Information
 Earth MOID = 1.40644 au 
 Jupiter MOID = 1.26626 au 
 T_jup = 3.199 
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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-January); 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

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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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