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74253 (1998 SR74)
Classification: Main-belt Asteroid          SPK-ID: 2074253
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04735040805791999 3.0282e-08  
a 2.590545717455584 1.1746e-08 au
q 2.467882320641365 7.9005e-08 au
i 7.623379595350297 3.997e-06 deg
node 47.36840230043862 2.6386e-05 deg
peri 82.34051459469711 5.1622e-05 deg
M 327.1088302594352 4.4453e-05 deg
tp 2459139.643247948695
(2020-Oct-17.14324795)
0.00018823 TDB
period 1522.948853951885
4.17
1.0358e-05
2.836e-08
d
yr
n .2363835128578609 1.6077e-09 deg/d
Q 2.713209114269802 1.2302e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1454  
   data-arc span      9293 days (25.44 yr)  
   first obs. used      1994-11-07  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5044  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:57  

Additional Information
 Earth MOID = 1.4969 au 
 Jupiter MOID = 2.31076 au 
 T_jup = 3.406 
[ 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 14.2   n/a MPO412634  
diameter diameter 8.462 km 0.406 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74253 (1998 SR74)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SR74 = 2000 EM11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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