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JPL Small-Body Database Browser
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172257 (2002 SD16)
Classification: Main-belt Asteroid          SPK-ID: 2172257
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2359927564007287 4.4016e-08  
a 2.705527772285238 2.0961e-08 au
q 2.067042815784922 1.2066e-07 au
i 11.93727682701095 9.1197e-06 deg
node 298.6131033030164 2.8296e-05 deg
peri 104.1531486377804 3.7194e-05 deg
M 330.5556325051971 2.5487e-05 deg
tp 2459133.446267869034
(2020-Oct-10.94626787)
0.00011599 TDB
period 1625.460504162637
4.45
1.889e-05
5.172e-08
d
yr
n .2214756981655827 2.5738e-09 deg/d
Q 3.344012728785554 2.5908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      314  
   data-arc span      6642 days (18.18 yr)  
   first obs. used      1998-12-17  
   last obs. used      2017-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58862  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-11 07:19:23  

Additional Information
 Earth MOID = 1.11411 au 
 Jupiter MOID = 2.20884 au 
 T_jup = 3.294 
[ 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 15.9   n/a MPO417926  

172257 (2002 SD16)          Discovered 2002-Sep-27 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ 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
2137-Oct-10 01:04 00:11 Eunom 0.0474295575156202 0.047399751489898 0.0474593700396606 1.49531622923295 1.49531603130288 2501865.544581794 11.172429814654 1719.92098100932 90.029850288257 -30.6363344652354 40023.0339972931 T 12 CATAB v2.0e-lin.ifort 2017-Nov-23 12:50:51 2018-Dec-17 19:24
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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