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JPL Small-Body Database Browser
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49142 (1998 SQ42)
Classification: Main-belt Asteroid          SPK-ID: 2049142
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497655355345957 3.3062e-08  
a 2.424702355252545 1.0605e-08 au
q 2.061565508506152 8.1618e-08 au
i 4.130487892909816 6.7608e-06 deg
node 349.9315695776799 5.7135e-05 deg
peri 95.75557081943424 6.5778e-05 deg
M 102.3820339564908 2.9589e-05 deg
tp 2458208.300233543959
(2018-Mar-30.80023354)
0.00011245 TDB
period 1379.069261157451
3.78
9.0478e-06
2.477e-08
d
yr
n .2610456270324324 1.7127e-09 deg/d
Q 2.787839201998938 1.2194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      8998 days (24.64 yr)  
   first obs. used      1994-09-05  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57471  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:49:19  

Additional Information
 Earth MOID = 1.08262 au 
 Jupiter MOID = 2.41973 au 
 T_jup = 3.492 
[ 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 16.0   n/a MPO432050  

49142 (1998 SQ42)          Discovered 1998-Sep-23 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SQ42 = 1994 RF27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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