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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2154896766063003 1.9948e-08  
a 3.055503006271516 1.3233e-08 au
q 2.397073651580488 6.2759e-08 au
i .4097782079949915 1.8107e-06 deg
node 231.7234398004176 0.0001707 deg
peri 295.3913992137096 0.00017089 deg
M 263.8232006501544 8.0846e-06 deg
tp 2459917.683093477536
(2022-Dec-04.18309348)
4.6108e-05 TDB
period 1950.843809736471
5.34
1.2674e-05
3.47e-08
d
yr
n .1845355318571764 1.1988e-09 deg/d
Q 3.713932360962543 1.6085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2807  
   data-arc span      32591 days (89.23 yr)  
   first obs. used      1932-04-24  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:32:40  

Additional Information
 Earth MOID = 1.40488 au 
 Jupiter MOID = 1.26337 au 
 T_jup = 3.200 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457193.5 (2015-Jun-20.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2137198941023452 2.0176e-08  
q 2.405124026693448 6.3616e-08 au
tp 2457968.840168316315
(2017-Aug-03.34016832)
3.8449e-05 TDB
node 231.7216509382025 0.00017154 deg
peri 295.8513451916726 0.00017172 deg
i .407309571181798 1.8115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2807  
   data-arc span      32591 days (89.23 yr)  
   first obs. used      1932-04-24  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:32:40  

Additional Information
 Jupiter MOID = 1.26337 au 
 T_jup = 3.200 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.070872887336756E-16 -1.265888905226889E-15 -7.663717795998971E-14 -8.266091005678738E-13 8.354491785860978E-13 2.414166323274186E-15
q -1.265888905226889E-15 4.047020010416538E-15 4.37086199615562E-13 2.441894936849684E-12 -2.448938618135209E-12 -7.054874654350338E-15
tp -7.663717795998971E-14 4.37086199615562E-13 1.478329115405665E-9 -2.950340268717604E-10 4.879911554012474E-10 1.097741856573656E-12
node -8.266091005678738E-13 2.441894936849684E-12 -2.950340268717604E-10 2.942710114861658E-8 -2.944378296452675E-8 -1.609655205308957E-10
peri 8.354491785860978E-13 -2.448938618135209E-12 4.879911554012474E-10 -2.944378296452675E-8 2.94880185785159E-8 1.609737454074641E-10
i 2.414166323274186E-15 -7.054874654350338E-15 1.097741856573656E-12 -1.609655205308957E-10 1.609737454074641E-10 3.281533962770187E-12

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 12.59   n/a E2021B10  
rotation period rot_per 5.2750 h n/a LCDB (Rev. 2020-October); 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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