Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08223197638182826 6.9143e-08  
a 2.775725836922091 2.3958e-08 au
q 2.547472415457883 2.0045e-07 au
i 1.75397526561476 4.714e-06 deg
node 95.80481368119517 0.00026057 deg
peri 249.3487429515263 0.00026297 deg
M 317.5369262376267 3.9523e-05 deg
tp 2459199.738014936320
(2020-Dec-16.23801494)
0.00018664 TDB
period 1689.130791107062
4.62
2.1869e-05
5.987e-08
d
yr
n .2131273681678935 2.7594e-09 deg/d
Q 3.003979258386298 2.5929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      306  
   data-arc span      6120 days (16.76 yr)  
   first obs. used      2002-09-27  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60309  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:45:47  

Additional Information
 Earth MOID = 1.54052 au 
 Jupiter MOID = 2.31944 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456957.5 (2014-Oct-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0830151827449431 6.9487e-08  
q 2.542570867322179 2.0125e-07 au
tp 2457519.384903090024
(2016-May-10.88490309)
0.00017558 TDB
node 95.80755597648121 0.00026067 deg
peri 250.9637920026625 0.000263 deg
i 1.75425539436979 4.718e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      306  
   data-arc span      6120 days (16.76 yr)  
   first obs. used      2002-09-27  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60309  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:45:47  

Additional Information
 Jupiter MOID = 2.31944 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.828472273371355E-15 -1.391475975986514E-14 3.323720947217586E-12 7.105139244676785E-14 7.354240264492577E-13 -1.113755252571103E-17
q -1.391475975986514E-14 4.049983955268248E-14 -7.888053493331789E-12 -2.010540062914305E-13 -1.806865247330536E-12 2.311650479680008E-16
tp 3.323720947217586E-12 -7.888053493331789E-12 3.082724648941329E-8 1.059681210701061E-10 6.242385444620131E-9 1.589404258439575E-12
node 7.105139244676785E-14 -2.010540062914305E-13 1.059681210701061E-10 6.795109327677075E-8 -6.789558527996703E-8 -3.040198140713943E-10
peri 7.354240264492577E-13 -1.806865247330536E-12 6.242385444620131E-9 -6.789558527996703E-8 6.916927835957088E-8 3.041923168316052E-10
i -1.113755252571103E-17 2.311650479680008E-16 1.589404258439575E-12 -3.040198140713943E-10 3.041923168316052E-10 2.225913217016177E-11

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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-14 06:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin