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172258 (2002 SG23)
Classification: Main-belt Asteroid          SPK-ID: 2172258
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 .08223198122896419 6.72e-08  
a 2.775725841291711 1.9545e-08 au
q 2.54747240601386 1.9777e-07 au
i 1.753970805593445 4.3428e-06 deg
node 95.80529732526159 0.00017383 deg
peri 249.3482676461733 0.00017585 deg
M 317.5369166134378 2.5939e-05 deg
tp 2459199.738060563771
(2020-Dec-16.23806056)
0.00012181 TDB
period 1689.130795095673
4.62
1.7841e-05
4.885e-08
d
yr
n .2131273676646275 2.2511e-09 deg/d
Q 3.003979276569562 2.1152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      350  
   data-arc span      6514 days (17.83 yr)  
   first obs. used      2002-09-27  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58265  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 13:00:28  

Additional Information
 Earth MOID = 1.54052 au 
 Jupiter MOID = 2.31944 au 
 T_jup = 3.330 
[ 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 16.1   n/a MPO436856  
diameter diameter 3.838 km 0.725 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172258 (2002 SG23)          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
1937-Sep-08 18:09 00:03 Amphi 0.0472238940035256 0.0472150837669357 0.0472327149959614 2.61876214752379 2.61876210103854 2428785.256559365 3.44480336470762 1211.83184234827 48.2815064734243 -68.8646298055154 136331.017869177 T 13 CATAB v2.0f-lin.ifort 2020-Aug-25 13:00:44 2020-Aug-25 13:00
2066-Jul-26 22:06 00:03 Eunom 0.0261494868487192 0.0261329697864316 0.0261660061793705 4.82318074020302 4.8231806289025 2475858.420815731 2.52847864644012 908.427449519061 48.1017374915199 -25.0706628794036 34653.519601579 T 13 CATAB v2.0f-lin.ifort 2020-Aug-25 13:00:44 2020-Aug-25 13:00
2095-Jan-19 19:44 00:17 Psych 0.0165653445208626 0.0165524629051316 0.01657826430794 1.49848553732248 1.49848504990601 2486262.322349922 17.4466022387571 1403.17090681282 53.2774601148226 -63.0291732985887 41198.7728905226 T 13 CATAB v2.0f-lin.ifort 2020-Aug-25 13:00:44 2020-Aug-25 13:00
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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