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3514 Hooke (1971 UJ)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003514
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1928926938664947 1.9584e-08  
a 3.95756153374399 2.754e-08 au
q 3.194176828357696 8.283e-08 au
i 3.50464443328642 6.1779e-07 deg
node 24.27236128491176 7.097e-06 deg
peri 341.7229936566794 8.9634e-06 deg
M 148.1920675730145 7.0586e-06 deg
tp 2458212.743442823655
(2018-Apr-04.24344282)
5.3555e-05 TDB
period 2875.675922218429
7.87
3.0017e-05
8.218e-08
d
yr
n .1251879591919661 1.3067e-09 deg/d
Q 4.720946239130286 3.2852e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2565  
   data-arc span      18127 days (49.63 yr)  
   first obs. used      1971-10-16  
   last obs. used      2021-06-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:32:01  

Additional Information
 Earth MOID = 2.19223 au 
 Jupiter MOID = .741203 au 
 T_jup = 3.023 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457089.5 (2015-Mar-08.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1914256604424917 1.9612e-08  
q 3.195555031903273 8.2469e-08 au
tp 2458213.617445870837
(2018-Apr-05.11744587)
5.3862e-05 TDB
node 24.32750797030336 7.0956e-06 deg
peri 341.9907540127533 8.9883e-06 deg
i 3.50619833831752 6.1809e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2565  
   data-arc span      18127 days (49.63 yr)  
   first obs. used      1971-10-16  
   last obs. used      2021-06-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:32:01  

Additional Information
 Jupiter MOID = .741203 au 
 T_jup = 3.023 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.846240865681371E-16 -1.559585209511754E-15 -1.165815494700473E-13 3.63930695274532E-15 1.541311958946301E-14 1.421651635472808E-15
q -1.559585209511754E-15 6.801107079666017E-15 5.936620778218285E-13 -1.308292565825595E-14 -7.174752628001893E-14 -5.483294865255544E-15
tp -1.165815494700473E-13 5.936620778218285E-13 2.901151761734438E-9 1.103021104574323E-11 2.87906971853889E-10 -2.641714483919474E-13
node 3.63930695274532E-15 -1.308292565825595E-14 1.103021104574323E-11 5.034708655820154E-11 -4.807367121713889E-11 2.986991483296302E-12
peri 1.541311958946301E-14 -7.174752628001893E-14 2.87906971853889E-10 -4.807367121713889E-11 8.078974194360211E-11 -2.972327905467955E-12
i 1.421651635472808E-15 -5.483294865255544E-15 -2.641714483919474E-13 2.986991483296302E-12 -2.972327905467955E-12 3.820350622689825E-13

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 11.80   n/a MPCxxxxx  
diameter diameter 22.039 km 0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 4.307 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Dahlgren, M.; Lahulla, J.F.; Lagerkvist, C.-I.; Lagerros, J.; et al. (1998) Icarus 133, 247-285.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 161-163.]
geometric albedo albedo 0.084   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

3514 Hooke           Discovered 1971 Oct. 26 by L. Kohoutek at Bergedorf.
English experimental scientist Robert Hooke (1635-1703) is known for his law of elasticity, the spring balance, an escapement for clocks and a Universal Joint commonly used at the end of a propeller shaft. The name was suggested for this specific minor planet by D. Bowater in the BBC Word of Mouth competition.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1971 UJ = 1979 WH8 = 1981 AG3 
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