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JPL Small-Body Database Browser
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48976 (1998 QN40)
Classification: Main-belt Asteroid          SPK-ID: 2048976
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03446722277598518 4.0654e-08  
a 2.376779730414757 1.0697e-08 au
q 2.294858733957105 9.4879e-08 au
i 4.240661494193436 4.5081e-06 deg
node 250.6612969159502 6.7467e-05 deg
peri 187.9787357076142 0.00010429 deg
M 137.7060074540617 7.9999e-05 deg
tp 2458088.544497011364
(2017-Dec-01.04449701)
0.00029646 TDB
period 1338.387369464562
3.66
9.035e-06
2.474e-08
d
yr
n .2689804224198725 1.8158e-09 deg/d
Q 2.458700726872409 1.1065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1126  
   data-arc span      10049 days (27.51 yr)  
   first obs. used      1991-11-05  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52073  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:41  

Additional Information
 Earth MOID = 1.30997 au 
 Jupiter MOID = 2.62136 au 
 T_jup = 3.536 
[ 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 14.7   n/a MPO436125  
rotation period rot_per 4.713 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

48976 (1998 QN40)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QN40 = 2000 AR124 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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