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7402 (1987 YH)
Classification: Main-belt Asteroid          SPK-ID: 2007402
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2010047189940488 3.6068e-08  
a 2.781717059393227 1.6028e-08 au
q 2.22257880354894 1.0294e-07 au
i 8.236344180959945 6.5182e-06 deg
node 150.9766897903659 3.1945e-05 deg
peri 293.049124854642 3.7551e-05 deg
M 30.21649165627425 1.9444e-05 deg
tp 2457258.264044260642
(2015-Aug-23.76404426)
9.102e-05 JED
period 1694.602558385914
4.64
1.4646e-05
4.01e-08
d
yr
n .2124391930240535 1.8361e-09 deg/d
Q 3.340855315237514 1.925e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1230  
   data-arc span      21835 days (59.78 yr)  
   first obs. used      1956-03-09  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54151  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:03:38  

Additional Information
 Earth MOID = 1.25343 au 
 Jupiter MOID = 1.95167 au 
 T_jup = 3.288 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO358703  
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)

7402 (1987 YH)          Discovered 1987-Dec-25 by Kojima, T. at Chiyoda
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1987 YH = 1956 ET = 1970 EQ2 = 1982 VN9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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