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JPL Small-Body Database Browser
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46868 (1998 QM93)
Classification: Main-belt Asteroid          SPK-ID: 2046868
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1688521106580891 4.1906e-08  
a 2.523701322779359 1.2924e-08 au
q 2.097569027757453 1.0562e-07 au
i 15.8374848466876 4.8079e-06 deg
node 27.28970058455157 1.4441e-05 deg
peri 293.3596008547357 2.2938e-05 deg
M 108.8461355220692 2.0746e-05 deg
tp 2458157.742554033587
(2018-Feb-08.24255403)
8.3796e-05 TDB
period 1464.385297497227
4.01
1.1248e-05
3.08e-08
d
yr
n .2458369396464674 1.8884e-09 deg/d
Q 2.949833617801266 1.5106e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1343  
   data-arc span      7492 days (20.51 yr)  
   first obs. used      1998-08-28  
   last obs. used      2019-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51261  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:39:40  

Additional Information
 Earth MOID = 1.14109 au 
 Jupiter MOID = 2.55872 au 
 T_jup = 3.383 
[ 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 13.9   n/a MPO365800  
diameter diameter 4.271 km 0.436 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.646 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.]
geometric albedo albedo 0.292   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

46868 (1998 QM93)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QM93 = 2000 EP116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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