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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304461624456082 4.1656e-08  
a 2.605377884104665 9.2968e-09 au
q 2.265516337402553 1.1035e-07 au
i 3.897879938760393 3.149e-06 deg
node 261.6135477569654 5.9659e-05 deg
peri 244.8272826048968 6.1178e-05 deg
M 9.336350879891354 1.228e-05 deg
tp 2458960.663683462784
(2020-Apr-21.16368346)
5.2413e-05 TDB
period 1536.047020714008
4.21
8.2216e-06
2.251e-08
d
yr
n .2343678254280651 1.2544e-09 deg/d
Q 2.945239430806777 1.051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2265  
   data-arc span      9698 days (26.55 yr)  
   first obs. used      1993-10-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47371  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:18:11  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2169-Mar-17 04:45 00:01 Psych 0.0351747268251314 0.0351535860339839 0.0351958705852229 4.49833628053868 4.4983362040723 2513346.698252687 1.13520117802043 1170.48036549638 44.6312535240005 -25.8419169837332 51511.591281038 T 32 CATAB v2.0f-lin.ifort 2020-May-20 04:18:34 2020-May-20 04:18
2189-Dec-11 09:47 00:04 Iris 0.0192415804223154 0.0192298742223226 0.019253314619849 5.2399341027626 5.23993404574532 2520920.907591557 4.11582484017595 1298.89167950502 42.0684090456995 63.3271673596106 61129.3955108241 T 32 CATAB v2.0f-lin.ifort 2020-May-20 04:18:34 2020-May-20 04:18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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