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JPL Small-Body Database Browser
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886 Washingtonia (A917 WA)
Classification: Main-belt Asteroid          SPK-ID: 2000886
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2701452419007176 4.2019e-08  
a 3.169914947867712 1.3643e-08 au
q 2.313577507471289 1.361e-07 au
i 16.86623763779391 4.5214e-06 deg
node 58.89339397937549 1.4865e-05 deg
peri 302.1650569385072 1.615e-05 deg
M 31.93524448086159 7.8222e-06 deg
tp 2458417.632054337075
(2018-Oct-26.13205434)
4.4382e-05 TDB
period 2061.435931016773
5.64
1.3308e-05
3.644e-08
d
yr
n .1746355511628418 1.1274e-09 deg/d
Q 4.026252388264136 1.7328e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3311  
   data-arc span      39989 days (109.48 yr)  
   first obs. used      1910-06-03  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34762  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:13:41  

Additional Information
 Earth MOID = 1.36063 au 
 Jupiter MOID = 1.68025 au 
 T_jup = 3.080 
[ 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 9.3   n/a MPO236394  
diameter diameter 86.793 km 0.857 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.001 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2003) Minor Planet Bull. 30, 61-64.]
geometric albedo albedo 0.078   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B C   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)

886 Washingtonia (A917 WA)          Discovered 1917-Nov-16 by Peters, G. H. at Washington
Independent discovery Nov. 12 by M. Harwood, Nantucket.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1983-Feb-10 16:24 < 00:01 Jupiter 1.98591915910746 1.98591841855907 1.98591989966014 4.45686906504038 4.36012083203826 2445376.183529079 0.726400888399987 170.51157718023 13.9421827353693 78.9705646803786 3420568.94369398 T 34 CATAB v2.0f-lin.ifort 2019-Dec-03 20:14:01 2019-Dec-03 20:14
1993-Dec-10 14:04 < 00:01 Jupiter 1.72165493214393 1.7216544184107 1.72165544587805 3.61954275375556 3.48096632903139 2449332.085766837 0.481231978750257 105.593034308687 16.7826632012637 80.4207986755038 2539410.24210221 T 34 CATAB v2.0f-lin.ifort 2019-Dec-03 20:14:01 2019-Dec-03 20:14
2004-Sep-20 10:19 < 00:01 Jupiter 1.80923049032602 1.80922982969242 1.80923115095952 2.45392733987574 2.25508865265048 2453268.929661842 0.509838872765675 138.852271259601 29.8542618613859 74.1420386702671 1834564.3009782 T 34 CATAB v2.0f-lin.ifort 2019-Dec-03 20:14:01 2019-Dec-03 20:14
2101-Jan-28 12:27 00:01 Jupiter 1.74228009054425 1.74227938312485 1.74228079797017 3.93233896132554 3.80670129201503 2488462.018780741 1.31834906079996 199.540915856742 13.6424470002152 81.7435615423168 2705603.22870827 T 34 CATAB v2.0f-lin.ifort 2019-Dec-03 20:14:01 2019-Dec-03 20:14
2111-Dec-12 03:54 00:02 Jupiter 1.71204523483517 1.71204455152064 1.71204591814999 3.20896172125235 3.05089317873577 2492431.662808972 1.66289574493647 129.516972989295 38.29213571537 -83.9103900938866 1766861.1083445 T 34 CATAB v2.0f-lin.ifort 2019-Dec-03 20:14:01 2019-Dec-03 20:14

Alternate Designations
 A917 WA = 1945 WA = 1952 BN = A910 LA = A916 NA = A917 UD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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