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JPL Small-Body Database Browser
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48935 (1998 QK1)
Classification: Main-belt Asteroid          SPK-ID: 2048935
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1393535303942099 7.331e-08  
a 2.296976580758025 6.6446e-09 au
q 1.976884784996573 1.6765e-07 au
i 6.450697545113739 6.3169e-06 deg
node 310.4773973997077 4.5526e-05 deg
peri 39.77770001681551 4.7491e-05 deg
M 324.9434466555902 1.2926e-05 deg
tp 2458724.322620916862
(2019-Aug-28.82262092)
4.5763e-05 TDB
period 1271.549518634535
3.48
5.5175e-06
1.511e-08
d
yr
n .283119135137253 1.2285e-09 deg/d
Q 2.617068376519477 7.5706e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1127  
   data-arc span      25157 days (68.88 yr)  
   first obs. used      1950-12-09  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4748  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:39:27  

Additional Information
 Earth MOID = .974002 au 
 Jupiter MOID = 2.78576 au 
 T_jup = 3.573 
[ 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 14.9   n/a MPO247732  
diameter diameter 2.363 km 0.432 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.363 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.417   0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48935 (1998 QK1)          Discovered 1998-Aug-17 by Visnjan at Visnjan
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QK1 = 1991 PN15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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