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JPL Small-Body Database Browser
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249602 (1998 SY44)
Classification: Outer Main-belt Asteroid          SPK-ID: 2249602
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09035913269607482 5.122e-08  
a 3.266449553721827 3.5216e-08 au
q 2.971296005052042 1.6855e-07 au
i .455001068569662 8.0734e-06 deg
node 39.06797369247352 0.00080024 deg
peri 80.82209360182516 0.00080207 deg
M 72.84471924900059 5.0666e-05 deg
tp 2458164.177174389432
(2018-Feb-14.67717439)
0.00030471 TDB
period 2156.315774694397
5.90
3.4872e-05
9.547e-08
d
yr
n .1669514290183315 2.6999e-09 deg/d
Q 3.561603102391612 3.8398e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      7533 days (20.62 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56018  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:41:02  

Additional Information
 Earth MOID = 1.98766 au 
 Jupiter MOID = 1.50307 au 
 T_jup = 3.171 
[ 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 15.8   n/a MPO437159  

249602 (1998 SY44)          Discovered 1998-Sep-25 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1998 SY44 = 2001 FK187 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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