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15993 (1998 YH8)
Classification: Main-belt Asteroid          SPK-ID: 2015993
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .130446161189111 4.2294e-08  
a 2.605377883820783 9.9975e-09 au
q 2.265516340429352 1.1151e-07 au
i 3.897880206966345 3.2981e-06 deg
node 261.6135467690591 6.4057e-05 deg
peri 244.8272831425737 6.5547e-05 deg
M 9.336351464478591 1.3409e-05 deg
tp 2458960.663680974980
(2020-Apr-21.16368097)
5.7196e-05 TDB
period 1536.047020462956
4.21
8.8413e-06
2.421e-08
d
yr
n .2343678254663702 1.349e-09 deg/d
Q 2.945239427212214 1.1302e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2012  
   data-arc span      9585 days (26.24 yr)  
   first obs. used      1993-10-09  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49133  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:59:48  

Additional Information
 Earth MOID = 1.2808 au 
 Jupiter MOID = 2.08404 au 
 T_jup = 3.397 
[ 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 13.6   n/a MPO358786  
diameter diameter 4.793 km 0.422 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.306   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15993 (1998 YH8)          Discovered 1998-Dec-24 by Kobayashi, T. at Oizumi
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

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