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226154 (2002 SD18)
Classification: Main-belt Asteroid          SPK-ID: 2226154
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08983515824837543 4.3976e-08  
a 2.27150237246272 1.2594e-08 au
q 2.067441597370971 1.0437e-07 au
i 4.145553059750855 6.4917e-06 deg
node 179.6463564996133 6.0085e-05 deg
peri 292.3985870810953 7.0125e-05 deg
M 326.3274922469359 3.5857e-05 deg
tp 2459117.461028822756
(2020-Sep-24.96102882)
0.00012474 TDB
period 1250.45543637482
3.42
1.0399e-05
2.847e-08
d
yr
n .2878951056773934 2.3942e-09 deg/d
Q 2.475563147554469 1.3725e-08 au
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      8830 days (24.18 yr)  
   first obs. used      1995-09-22  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62023  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 15:34:40  

Additional Information
 Earth MOID = 1.08809 au 
 Jupiter MOID = 2.59505 au 
 T_jup = 3.603 
[ 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 17.0   n/a MPO450048  

226154 (2002 SD18)          Discovered 2002-Sep-28 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1955-Sep-06 21:03 < 00:01 Iris 0.0335740978440347 0.0335728277138724 0.0335753706622574 4.82852806487237 4.82852802941113 2435357.376791376 0.878625839073381 845.210234721223 52.4304816328229 87.5782249495715 95673.2222590027 T 13 CATAB v2.0f-lin.ifort 2019-Dec-14 15:34:42 2019-Dec-14 15:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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