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JPL Small-Body Database Browser
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7291 Hyakutake (1991 XC1)
Classification: Main-belt Asteroid          SPK-ID: 2007291
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2314573072489173 4.3149e-08  
a 3.125670956707592 1.8771e-08 au
q 2.402211573721905 1.4127e-07 au
i 8.407190594177136 4.122e-06 deg
node 83.96244973995726 3.1467e-05 deg
peri 303.0012049184671 3.2481e-05 deg
M 8.597856929828311 1.016e-05 deg
tp 2458552.294007790774
(2019-Mar-09.79400779)
5.6773e-05 TDB
period 2018.428235891542
5.53
1.8182e-05
4.978e-08
d
yr
n .1783566012397699 1.6066e-09 deg/d
Q 3.849130339693278 2.3115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2090  
   data-arc span      16158 days (44.24 yr)  
   first obs. used      1974-11-09  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47919  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:49:27  

Additional Information
 Earth MOID = 1.41923 au 
 Jupiter MOID = 1.65148 au 
 T_jup = 3.157 
[ 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 12.0   n/a MPO324375  
diameter diameter 15.933 km 0.395 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.121   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7291 Hyakutake           Discovered 1991 Dec. 13 by S. Otomo at Kiyosato.
Yuji Hyakutake (b. 1950) discovered comets C/1995 Y1 and C/1996 B2 visually from the town of Aira, in Kagoshima prefecture. He later became a curator at the astronomical museum in Aira. The name was suggested by H. Hayasi.
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
 1991 XC1 = 1974 VE3 = 1974 WO1 = 1987 AP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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