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JPL Small-Body Database Browser
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2505 Hebei (1975 UJ)
Classification: Main-belt Asteroid          SPK-ID: 2002505
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737770453580392 3.0521e-08  
a 3.142931156275572 1.5178e-08 au
q 2.596761866174277 9.4445e-08 au
i 2.078049413672528 3.5078e-06 deg
node 59.23848656194381 0.00010833 deg
peri 206.8570073248738 0.00010891 deg
M 20.12421958973081 1.1521e-05 deg
tp 2458486.732745912051
(2019-Jan-03.23274591)
6.5074e-05 TDB
period 2035.170173384568
5.57
1.4743e-05
4.036e-08
d
yr
n .176889384832771 1.2814e-09 deg/d
Q 3.689100446376866 1.7816e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3044  
   data-arc span      25462 days (69.71 yr)  
   first obs. used      1950-03-21  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46471  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:16:26  

Additional Information
 Earth MOID = 1.5807 au 
 Jupiter MOID = 1.40374 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 11.6   n/a MPO358652  
diameter diameter 22.288 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.089   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2505 Hebei (1975 UJ)          Discovered 1975-Oct-31 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1975 UJ = 1935 QJ1 = 1940 LM = 1951 JY = 1957 OL = 1968 HG1 = 1969 RF = 1973 FK2 = 1973 FO = 1975 VT8 = 1978 EX = 1979 HY2 = 1979 KH1 = 1981 VR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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