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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1421383636531968 3.9506e-08  
a 2.34129480196611 1.0131e-08 au
q 2.008506989984912 9.3511e-08 au
i 3.948050195995714 4.2297e-06 deg
node 283.5182325916745 6.7798e-05 deg
peri 108.2336096938179 6.9641e-05 deg
M 346.3320250383466 1.6392e-05 deg
tp 2459050.180304841717
(2020-Jul-19.68030484)
5.9674e-05 TDB
period 1308.526668595424
3.58
8.4934e-06
2.325e-08
d
yr
n .2751185807977647 1.7857e-09 deg/d
Q 2.674082613947309 1.1571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      805  
   data-arc span      9054 days (24.79 yr)  
   first obs. used      1996-01-17  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51537  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:34:58  

Additional Information
 Earth MOID = 1.01856 au 
 Jupiter MOID = 2.75576 au 
 T_jup = 3.547 
[ 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-August); 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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