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 ]  
101322 (1998 SA155)
Classification: Main-belt Asteroid          SPK-ID: 2101322
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .225228757498297 3.3759e-08  
a 2.664052320776334 1.0619e-08 au
q 2.064031126657426 9.1463e-08 au
i 3.102606776581754 3.9349e-06 deg
node 214.0880196649826 7.7785e-05 deg
peri 127.4869711648379 7.8522e-05 deg
M 13.43835294108641 1.0469e-05 deg
tp 2458941.213461542358
(2020-Apr-01.71346154)		 4.6029e-05 TDB
period 1588.226915777503
4.35		 9.4962e-06
2.6e-08		 d
yr
n .2266678623965802 1.3553e-09 deg/d
Q 3.264073514895242 1.3011e-08 au
   Orbit Determination Parameters
   # obs. used (total)      696  
   data-arc span      8583 days (23.50 yr)  
   first obs. used      1997-04-30  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51885  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:01:14  

Additional Information
 Earth MOID = 1.05773 au 
 Jupiter MOID = 2.16002 au 
 T_jup = 3.345 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO436473  
diameter diameter 4.075 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101322 (1998 SA155)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SA155 = 1997 HW17 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-06 03:07 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin