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2152 Hannibal (1978 WK)
Classification: Main-belt Asteroid          SPK-ID: 2002152
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2204489179805903 4.4394e-08  
a 3.124239222253761 1.4703e-08 au
q 2.435504066195398 1.3728e-07 au
i 13.96462337743883 4.4306e-06 deg
node 250.9290264125121 1.7056e-05 deg
peri 142.0062837257119 1.8779e-05 deg
M 173.3769731156031 8.9107e-06 deg
tp 2458029.087331035927
(2017-Oct-02.58733104)
4.7132e-05 TDB
period 2017.041562917874
5.52
1.4239e-05
3.898e-08
d
yr
n .1784792175919371 1.2599e-09 deg/d
Q 3.812974378312124 1.7945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2320  
   data-arc span      29447 days (80.62 yr)  
   first obs. used      1939-09-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42863  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:35:47  

Additional Information
 Earth MOID = 1.45956 au 
 Jupiter MOID = 1.69266 au 
 T_jup = 3.132 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456770.5 (2014-Apr-23.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2206568120657247 4.4392e-08  
q 2.434813838914418 1.3729e-07 au
tp 2456013.467462587354
(2012-Mar-26.96746259)
4.4333e-05 TDB
node 250.9422298324474 1.7051e-05 deg
peri 142.4307778404909 1.877e-05 deg
i 13.96715789609217 4.4316e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2320  
   data-arc span      29447 days (80.62 yr)  
   first obs. used      1939-09-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42863  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:35:47  

Additional Information
 Jupiter MOID = 1.69266 au 
 T_jup = 3.132 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.970609031559767E-15 -6.074108978249518E-15 1.100747059585534E-13 -2.860157420335976E-15 -1.605778443802414E-14 1.414129688997743E-17
q -6.074108978249518E-15 1.884962107415213E-14 -3.287027825251997E-13 8.416926100378298E-15 6.164636461141891E-14 7.640393923717324E-17
tp 1.100747059585534E-13 -3.287027825251997E-13 1.965449482781812E-9 -1.017658432221946E-12 3.6716124189038E-10 -2.080712388786472E-12
node -2.860157420335976E-15 8.416926100378298E-15 -1.017658432221946E-12 2.907237503466003E-10 -2.818543261065525E-10 -1.700527824060438E-11
peri -1.605778443802414E-14 6.164636461141891E-14 3.6716124189038E-10 -2.818543261065525E-10 3.523064970028306E-10 1.615307502225573E-11
i 1.414129688997743E-17 7.640393923717324E-17 -2.080712388786472E-12 -1.700527824060438E-11 1.615307502225573E-11 1.963907110125065E-11

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 10.8   n/a MPO384768  
diameter diameter 44.559 km 0.556 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.978 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bull. 34, 59-64.]
geometric albedo albedo 0.047   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2152 Hannibal (1978 WK)          Discovered 1978-Nov-19 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1978 WK = 1939 RM = 1952 BG1 = 1977 OB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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