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 ]  
102556 (1999 UW23)
Classification: Main-belt Asteroid          SPK-ID: 2102556
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1316344328938523 4.2718e-08  
a 2.34710749247505 1.0912e-08 au
q 2.038147328762185 1.0002e-07 au
i 5.751118037928311 4.037e-06 deg
node 270.071925292958 4.3413e-05 deg
peri 73.9905837282851 4.6159e-05 deg
M 296.3771670309786 1.6975e-05 deg
tp 2459232.617775090097
(2021-Jan-18.11777509)
6.2588e-05 TDB
period 1313.402675311904
3.60
9.1591e-06
2.508e-08
d
yr
n .274097203216453 1.9114e-09 deg/d
Q 2.656067656187915 1.2348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      7664 days (20.98 yr)  
   first obs. used      1999-09-18  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50105  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:54:03  

Additional Information
 Earth MOID = 1.03916 au 
 Jupiter MOID = 2.72458 au 
 T_jup = 3.542 
[ 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 15.53   n/a E2021B55  
rotation period rot_per 50.858 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

102556 (1999 UW23)          Discovered 1999-Oct-28 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 UW23 = 2003 WC141 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-28 19:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin