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 ]  
5649 Donnashirley (1990 WZ2)
Classification: Mars-crossing Asteroid          SPK-ID: 2005649
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3363379734716839 3.5624e-08  
a 2.281326908361196 1.1341e-08 au
q 1.514030039176569 8.1068e-08 au
i 21.72202985648487 8.2095e-06 deg
node 3.397667442537688 1.0179e-05 deg
peri 62.55808693398422 1.6725e-05 deg
M 250.6154309059154 1.4273e-05 deg
tp 2459582.913548930598
(2022-Jan-03.41354893)
5.1702e-05 TDB
period 1258.576769604518
3.45
9.385e-06
2.569e-08
d
yr
n .2860373786440716 2.1329e-09 deg/d
Q 3.048623777545822 1.5155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      968  
   data-arc span      16069 days (43.99 yr)  
   first obs. used      1975-06-08  
   last obs. used      2019-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46773  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:47:52  

Additional Information
 Earth MOID = .62433 au 
 Jupiter MOID = 2.68377 au 
 T_jup = 3.439 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457180.5 (2015-Jun-07.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3366715751833774 3.5386e-08  
q 1.512787235966849 8.0259e-08 au
tp 2457068.097185920807
(2015-Feb-14.59718592)
4.2381e-05 TDB
node 3.468965782493845 1.0183e-05 deg
peri 62.66200378339366 1.6696e-05 deg
i 21.72561787687476 8.2084e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      968  
   data-arc span      16069 days (43.99 yr)  
   first obs. used      1975-06-08  
   last obs. used      2019-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46773  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:47:52  

Additional Information
 Jupiter MOID = 2.68377 au 
 T_jup = 3.439 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.252204167311071E-15 -2.827909453733069E-15 -4.83790839347142E-13 1.929721425572152E-15 -1.892870240224128E-13 1.092903768416721E-14
q -2.827909453733069E-15 6.441439739788605E-15 1.197214827900547E-12 -6.693970299547734E-15 4.601868111674067E-13 -2.485736461185184E-14
tp -4.83790839347142E-13 1.197214827900547E-12 1.796111000662825E-9 -2.294655862599367E-11 5.658543720937774E-10 -2.710006880819645E-11
node 1.929721425572152E-15 -6.693970299547734E-15 -2.294655862599367E-11 1.036973446647669E-10 -1.019825908976858E-10 -1.135825047262495E-11
peri -1.892870240224128E-13 4.601868111674067E-13 5.658543720937774E-10 -1.019825908976858E-10 2.787504423499786E-10 2.646418051603387E-12
i 1.092903768416721E-14 -2.485736461185184E-14 -2.710006880819645E-11 -1.135825047262495E-11 2.646418051603387E-12 6.737726138899649E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO381304  
diameter diameter 2.600 km 0.549 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.380   0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5649 Donnashirley (1990 WZ2)          Discovered 1990-Nov-18 by Helin, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-13 15:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin