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JPL Small-Body Database Browser
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74242 (1998 SY54)
Classification: Main-belt Asteroid          SPK-ID: 2074242
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .2222780423370407 5.6367e-08  
a 2.599589795647728 8.9041e-09 au
q 2.021758064991803 1.4721e-07 au
i 9.623641215227012 6.7629e-06 deg
node 6.59753004983226 1.9819e-05 deg
peri 20.12434032324441 2.3223e-05 deg
M 311.5008568262091 8.7884e-06 deg
tp 2458806.746804007072
(2019-Nov-19.24680401)
3.718e-05 TDB
period 1530.93115844303
4.19
7.8656e-06
2.153e-08
d
yr
n .2351510046775213 1.2082e-09 deg/d
Q 3.177421526303652 1.0883e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1028  
   data-arc span      10115 days (27.69 yr)  
   first obs. used      1992-03-26  
   last obs. used      2019-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49893  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:25:00  

Additional Information
 Earth MOID = 1.02762 au 
 Jupiter MOID = 2.29799 au 
 T_jup = 3.360 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO406554  

74242 (1998 SY54)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SY54 = 2000 EJ35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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