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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 
[ 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 12.59   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1940-Dec-05 11:47 00:02 Jupiter 1.7544154196592 1.7544137279332 1.7544171113814 1.93819388439037 1.67063044455682 2429968.990708934 1.85926626820404 73.3659328067795 15.9140255618629 -35.6063412433856 1459098.32458185 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
1950-Mar-31 02:24 00:02 Jupiter 1.45046153009966 1.45046034226308 1.45046271793643 0.595803508697436 n/a 2433371.600201054 1.63711568424216 66.1294288306956 26.4875334214765 -29.0302695369643 4900212.35005922 F 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
1999-Mar-03 10:58 < 00:01 Jupiter 1.3296558668671 1.32965553386809 1.32965619986617 0.302647676993574 n/a 2451240.956852387 0.396179534414262 25.3088388014335 11.0009886136543 -56.9264024256332 15740744.835878 F 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
2008-Jul-01 02:39 < 00:01 Jupiter 1.94061615873772 1.94061592025554 1.9406163972199 2.38187851507497 2.19098229794164 2454648.610401670 0.183074523860956 18.8505817447973 5.07395507686555 -89.9015746876962 5177567.12956183 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
2048-Apr-28 12:21 < 00:01 Jupiter 1.99818812868363 1.99818759751951 1.99818865984763 3.10535874209667 2.96571447754028 2469195.014576069 0.711312339215575 21.2826038694774 8.92294751039695 38.9415916822496 3431615.28310677 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
2057-Aug-22 22:10 < 00:01 Jupiter 1.29938326839165 1.29938286978806 1.29938366699542 0.207827220779848 n/a 2472598.423579228 0.973398100228113 145.86299785002 19.5822160676776 88.6485173123635 9920234.28852961 F 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
2106-Aug-08 13:22 00:02 Jupiter 1.51710311295583 1.51710134723301 1.51710487868031 0.936493479452087 n/a 2490480.056665608 2.4855895833118 118.748152209706 10.0169077994692 -42.3279991470077 15314950.3855881 F 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
2115-Dec-01 06:46 00:03 Jupiter 1.68904853831588 1.68904631141078 1.68905076523269 1.37897210246393 0.947948255215681 2493881.782023626 2.65894587410049 876.513946145681 34.3383526595647 31.2663434828166 5166179.99644601 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33
2164-Dec-19 13:12 00:03 Jupiter 1.26304520518348 1.26304491009703 1.2630455002731 0.133627517918549 n/a 2511798.049814426 2.92908308868985 138.69869430067 10.168365513519 -85.5899818663219 18520259.5937888 F 39 CATAB v2.0g-lin.ifort 2021-Aug-25 21:33:25 2021-Aug-25 21:33

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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