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15994 (1998 YO8)
Classification: Main-belt Asteroid          SPK-ID: 2015994
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06038699850091428 3.6241e-08  
a 2.269354885806622 5.9292e-09 au
q 2.132315355719375 8.2019e-08 au
i 5.053039984441992 3.3139e-06 deg
node 143.5426448382375 3.9907e-05 deg
peri 46.40564226723608 4.67e-05 deg
M 23.94846721742869 2.385e-05 deg
tp 2458917.433239499103
(2020-Mar-08.93323950)
8.2756e-05 TDB
period 1248.682577837806
3.42
4.8937e-06
1.34e-08
d
yr
n .2883038543096909 1.1299e-09 deg/d
Q 2.406394415893869 6.2873e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2276  
   data-arc span      15100 days (41.34 yr)  
   first obs. used      1979-04-25  
   last obs. used      2020-08-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49583  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:30:03  

Additional Information
 Earth MOID = 1.13666 au 
 Jupiter MOID = 2.55256 au 
 T_jup = 3.606 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO347650  
diameter diameter 3.890 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.321   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15994 (1998 YO8)          Discovered 1998-Dec-23 by Korlevic, K. at Visnjan
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 YO8 = 1979 HC3 = 1982 BN13 = 1989 EK10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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