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4149 Harrison (1984 EZ)
Classification: Main-belt Asteroid          SPK-ID: 2004149
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .12469712166915 3.5269e-08  
a 2.665525497004469 1.0477e-08 au
q 2.333142139792281 9.4236e-08 au
i 12.93036347921603 3.2892e-06 deg
node 154.6728462484834 1.728e-05 deg
peri 76.59780966152923 2.212e-05 deg
M 71.53680621260294 1.2834e-05 deg
tp 2458684.636288055333
(2019-Jul-20.13628806)
5.6672e-05 TDB
period 1589.544492133719
4.35
9.3716e-06
2.566e-08
d
yr
n .2264799769880964 1.3353e-09 deg/d
Q 2.997908854216656 1.1783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2450  
   data-arc span      15635 days (42.81 yr)  
   first obs. used      1977-10-12  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:12:18  

Additional Information
 Earth MOID = 1.36475 au 
 Jupiter MOID = 2.0854 au 
 T_jup = 3.336 
[ 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 12.4   n/a MPO384790  
diameter diameter 10.130 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.7490 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.230   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4149 Harrison (1984 EZ)          Discovered 1984-Mar-09 by Skiff, B. A. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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