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6153 Hershey (1990 OB)
Classification: Main-belt Asteroid          SPK-ID: 2006153
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2799256072808439 3.5524e-08  
a 2.842185075950357 1.0046e-08 au
q 2.046584692560402 1.0417e-07 au
i 17.37349361207547 3.9717e-06 deg
node 198.6081805365966 1.2006e-05 deg
peri 193.8553796268177 1.3569e-05 deg
M 27.65531090782191 6.8648e-06 deg
tp 2458866.052415701216
(2020-Jan-17.55241570)
3.3133e-05 TDB
period 1750.156796605488
4.79
9.2788e-06
2.54e-08
d
yr
n .2056958557646018 1.0905e-09 deg/d
Q 3.637785459340312 1.2858e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2087  
   data-arc span      11061 days (30.28 yr)  
   first obs. used      1990-07-19  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43999  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:37:57  

Additional Information
 Earth MOID = 1.05522 au 
 Jupiter MOID = 1.82211 au 
 T_jup = 3.185 
[ 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 13.0   n/a MPO502212  
diameter diameter 19.397 km 3.631 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.094 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Higgins, D.; Pravec, P.; Kusnirak, P.; Reddy, V.; Dyvig, R. (2006) Minor Planet Bull. 33, 64-66.]
geometric albedo albedo 0.030   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

6153 Hershey (1990 OB)          Discovered 1990-Jul-19 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 OB = 1952 UN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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