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 ]  
16827 (1997 WD2)
Classification: Main-belt Asteroid          SPK-ID: 2016827
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .274341953476048 8.1602e-09  
a 2.339330720643241 7.0784e-09 au
q 1.697554160915443 1.7945e-08 au
i 6.241815147357813 1.0854e-06 deg
node 86.83879347084432 5.6717e-06 deg
peri 260.0759281700976 7.3477e-06 deg
M 210.8417140218612 4.8694e-06 deg
tp 2459741.977913039585
(2022-Jun-11.47791304)
1.9369e-05 TDB
period 1306.880455322615
3.58
5.9316e-06
1.624e-08
d
yr
n .2754651341932655 1.2503e-09 deg/d
Q 2.981107280371039 9.0203e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1985  
   data-arc span      10105 days (27.67 yr)  
   first obs. used      1993-07-15  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49803  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:43:21  

Additional Information
 Earth MOID = .702766 au 
 Jupiter MOID = 2.46738 au 
 T_jup = 3.506 
[ 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 13.98   n/a E2021B10  
diameter diameter 4.899 km 0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16827 (1997 WD2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WD2 = 1993 NC = 1995 BS16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 09:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin