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48975 (1998 QH40)
Classification: Main-belt Asteroid          SPK-ID: 2048975
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2213494828762743 4.8906e-08  
a 2.399206987307498 9.1959e-09 au
q 1.868143761353839 1.1892e-07 au
i 2.944141672533051 4.2301e-06 deg
node 258.9044865362284 9.2331e-05 deg
peri 142.9546829928023 9.2774e-05 deg
M 269.1890080864505 1.1893e-05 deg
tp 2459342.901707592785
(2021-May-08.40170759)
4.6296e-05 TDB
period 1357.375490962022
3.72
7.804e-06
2.137e-08
d
yr
n .2652176957643862 1.5248e-09 deg/d
Q 2.930270213261156 1.1231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1178  
   data-arc span      11951 days (32.72 yr)  
   first obs. used      1987-09-26  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54961  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:50:44  

Additional Information
 Earth MOID = .877776 au 
 Jupiter MOID = 2.48389 au 
 T_jup = 3.491 
[ 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 MPO474369  

48975 (1998 QH40)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QH40 = 1987 SY26 = 1987 UD2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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