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 ]  
11505 (1990 DW2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011505
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02360472333500053 2.0207e-08  
a 3.37457257310416 1.8504e-08 au
q 3.294916721142156 7.4908e-08 au
i 1.957155839732922 1.2243e-06 deg
node 336.193087792937 2.4789e-05 deg
peri 320.1103064466512 4.3117e-05 deg
M 207.0117308899087 3.3009e-05 deg
tp 2460162.737362222260
(2023-Aug-06.23736222)
0.00020658 TDB
period 2264.261517664065
6.20
1.8624e-05
5.099e-08
d
yr
n .1589922353012454 1.3077e-09 deg/d
Q 3.454228425066165 1.8941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2414  
   data-arc span      15711 days (43.01 yr)  
   first obs. used      1978-03-15  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45345  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:58:29  

Additional Information
 Earth MOID = 2.27733 au 
 Jupiter MOID = 1.59843 au 
 T_jup = 3.151 
[ 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 12.58   n/a MPCxxxxx  
diameter diameter 16.840 km 0.564 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.94920 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.075   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11505 (1990 DW2)          Discovered 1990-Feb-24 by Debehogne, H. at La Silla
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 DW2 = 1978 EG10 = 1993 SF13 = 1994 WR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-16 10:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin