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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04741252306415657 3.1011e-08  
a 2.589788792535252 1.1933e-08 au
q 2.46700037167788 8.0422e-08 au
i 7.624534022031798 4.0054e-06 deg
node 47.36868603972653 2.7003e-05 deg
peri 82.72776746773813 5.1935e-05 deg
M 232.1580456969879 4.442e-05 deg
tp 2459141.087311404276
(2020-Oct-18.58731140)
0.00018856 TDB
period 1522.281422922161
4.17
1.0521e-05
2.88e-08
d
yr
n .2364871531500045 1.6345e-09 deg/d
Q 2.712577213392624 1.2499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1357  
   data-arc span      9152 days (25.06 yr)  
   first obs. used      1994-11-07  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50757  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:45:43  

Additional Information
 Earth MOID = 1.49638 au 
 Jupiter MOID = 2.31222 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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