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74121 (1998 QT53)
Classification: Main-belt Asteroid          SPK-ID: 2074121
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2618013286717242 6.4004e-08  
a 2.317806424754727 1.4571e-08 au
q 1.71100162315008 1.4636e-07 au
i 11.21935978564236 5.5596e-06 deg
node 297.7708210034808 3.5372e-05 deg
peri 21.81033536231102 3.8868e-05 deg
M 302.3492018195594 1.9574e-05 deg
tp 2458806.903469950355
(2019-Nov-19.40346995)
7.0886e-05 TDB
period 1288.885002937177
3.53
1.2154e-05
3.328e-08
d
yr
n .2793111869403505 2.6338e-09 deg/d
Q 2.924611226359373 1.8386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      457  
   data-arc span      9724 days (26.62 yr)  
   first obs. used      1991-07-10  
   last obs. used      2018-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60295  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:28:58  

Additional Information
 Earth MOID = .701671 au 
 Jupiter MOID = 2.39746 au 
 T_jup = 3.509 
[ 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 15.6   n/a MPO400697  
diameter diameter 2.056 km 0.503 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.240   0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74121 (1998 QT53)          Discovered 1998-Aug-28 by Zoltowski, F. B. at Woomera
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QT53 = 1991 NX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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