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48918 (1998 OP8)
Classification: Main-belt Asteroid          SPK-ID: 2048918
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09038968017092186 4.083e-08  
a 2.262199179681928 7.1187e-09 au
q 2.057719719347557 9.4467e-08 au
i 4.397765357237349 3.7452e-06 deg
node 286.8833571332565 5.5794e-05 deg
peri 201.415806614307 6.0601e-05 deg
M 226.7867909272734 2.3583e-05 deg
tp 2459060.374657536250
(2020-Jul-29.87465754)
8.1762e-05 TDB
period 1242.781236676513
3.40
5.8662e-06
1.606e-08
d
yr
n .2896728638764485 1.3673e-09 deg/d
Q 2.466678640016299 7.7621e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1395  
   data-arc span      8273 days (22.65 yr)  
   first obs. used      1997-04-10  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51567  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:15:57  

Additional Information
 Earth MOID = 1.07394 au 
 Jupiter MOID = 2.576 au 
 T_jup = 3.610 
[ 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 14.8   n/a MPO347859  
diameter diameter 2.674 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.326   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48918 (1998 OP8)          Discovered 1998-Jul-26 by Elst, E. W. at La Silla
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 OP8 = 1999 XK217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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