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48969 (1998 QT38)
Classification: Main-belt Asteroid          SPK-ID: 2048969
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1423849853288549 4.0127e-08  
a 2.342785513340373 1.0404e-08 au
q 2.009208032394751 9.5197e-08 au
i 3.946550956371284 4.2528e-06 deg
node 283.52239494 6.8697e-05 deg
peri 107.9569961485155 7.0516e-05 deg
M 236.628847164385 1.6371e-05 deg
tp 2459049.357352925685
(2020-Jul-18.85735293)
6.0455e-05 TDB
period 1309.776583416986
3.59
8.7244e-06
2.389e-08
d
yr
n .2748560361804765 1.8308e-09 deg/d
Q 2.676362994285997 1.1885e-08 au
  Orbit Determination Parameters
   # obs. used (total)      756  
   data-arc span      8156 days (22.33 yr)  
   first obs. used      1996-01-17  
   last obs. used      2018-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52855  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 00:34:33  

Additional Information
 Earth MOID = 1.01853 au 
 Jupiter MOID = 2.75393 au 
 T_jup = 3.546 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO324748  
diameter diameter 2.722 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.258 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 0.181   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48969 (1998 QT38)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QT38 = 2000 CC51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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