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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 ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2202675555466248 4.5085e-08  
a 3.125222317012298 1.5319e-08 au
q 2.43683723670424 1.3932e-07 au
i 13.96430796070682 4.7267e-06 deg
node 250.9325098225866 1.7518e-05 deg
peri 142.095066587423 1.9566e-05 deg
M 101.8834152501807 9.0325e-06 deg
tp 2458029.388643617992
(2017-Oct-02.88864362)
4.9274e-05 TDB
period 2017.993682216675
5.52
1.4837e-05
4.062e-08
d
yr
n .1783950084544151 1.3117e-09 deg/d
Q 3.813607397320356 1.8693e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2084  
   data-arc span      29094 days (79.66 yr)  
   first obs. used      1939-09-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44005  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:30:56  

Additional Information
 Earth MOID = 1.46027 au 
 Jupiter MOID = 1.68982 au 
 T_jup = 3.132 
[ 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 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-January); 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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