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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .220573308664152 1.7629e-08  
a 3.123985239873365 1.3615e-08 au
q 2.434917479296522 5.8949e-08 au
i 13.96531922853272 6.7838e-07 deg
node 250.927084880988 3.0182e-06 deg
peri 141.9762653001034 4.7903e-06 deg
M 209.1258352810043 5.6353e-06 deg
tp 2460045.728757427312
(2023-Apr-11.22875743)
3.4786e-05 TDB
period 2016.795607389512
5.52
1.3185e-05
3.61e-08
d
yr
n .1785009837789039 1.1669e-09 deg/d
Q 3.813053000450208 1.6618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2560  
   data-arc span      29775 days (81.52 yr)  
   first obs. used      1939-09-14  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:00:53  

Additional Information
 Earth MOID = 1.45801 au 
 Jupiter MOID = 1.69385 au 
 T_jup = 3.132 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456970.5 (2014-Nov-09.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2205423199888321 1.7636e-08  
q 2.4352885078745 5.8997e-08 au
tp 2456013.171698815401
(2012-Mar-26.67169882)
2.7375e-05 TDB
node 250.942525493186 3.0173e-06 deg
peri 142.406079720591 4.7901e-06 deg
i 13.96705880151485 6.7857e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2560  
   data-arc span      29775 days (81.52 yr)  
   first obs. used      1939-09-14  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:00:53  

Additional Information
 Jupiter MOID = 1.69385 au 
 T_jup = 3.132 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.110111578022193E-16 -1.024731318373961E-15 -1.768140551635278E-13 -1.184746683083497E-14 -2.517998332048569E-15 4.635898998930957E-15
q -1.024731318373961E-15 3.480623061865167E-15 5.047911145399816E-13 3.551235053201321E-14 1.221554404579913E-14 -1.422937200320624E-14
tp -1.768140551635278E-13 5.047911145399816E-13 7.493763113896547E-10 -7.41480835971013E-12 9.543113334394394E-11 1.718569960579986E-12
node -1.184746683083497E-14 3.551235053201321E-14 -7.41480835971013E-12 9.104202870067685E-12 -1.001573324628963E-11 -1.7107806093584E-12
peri -2.517998332048569E-15 1.221554404579913E-14 9.543113334394394E-11 -1.001573324628963E-11 2.294541728257405E-11 2.110740399785018E-12
i 4.635898998930957E-15 -1.422937200320624E-14 1.718569960579986E-12 -1.7107806093584E-12 2.110740399785018E-12 4.604588443208465E-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 10.87   n/a E2021B10  
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. 2020-October); 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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