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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2615342825067478 4.5134e-08  
a 2.317374868986962 1.2901e-08 au
q 1.711301895327288 1.0634e-07 au
i 11.22129704361848 5.1098e-06 deg
node 297.7634189073813 3.258e-05 deg
peri 21.80333647149737 3.4915e-05 deg
M 54.09258377156341 1.4281e-05 deg
tp 2458806.889863215775
(2019-Nov-19.38986322)
5.0813e-05 TDB
period 1288.525050618163
3.53
1.076e-05
2.946e-08
d
yr
n .2793892131373713 2.3331e-09 deg/d
Q 2.923447842646635 1.6275e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      10248 days (28.06 yr)  
   first obs. used      1991-07-10  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57914  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:11:14  

Additional Information
 Earth MOID = .70281 au 
 Jupiter MOID = 2.40125 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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