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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2704085661714193 3.7489e-08  
a 3.170136176102496 1.2758e-08 au
q 2.312904198154474 1.2022e-07 au
i 16.86413247110114 4.1322e-06 deg
node 58.88651175982088 1.404e-05 deg
peri 302.1629278429506 1.5384e-05 deg
M 101.7637080514572 7.9975e-06 deg
tp 2458417.718540628254
(2018-Oct-26.21854063)
4.4445e-05 TDB
period 2061.651736076105
5.64
1.2445e-05
3.407e-08
d
yr
n .1746172710455839 1.0541e-09 deg/d
Q 4.027368154050518 1.6208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3729  
   data-arc span      40187 days (110.03 yr)  
   first obs. used      1910-06-03  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32571  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:22:27  

Additional Information
 Earth MOID = 1.36071 au 
 Jupiter MOID = 1.68216 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-August); 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 1.98591878632428 1.98591804553186 1.98591952712099 4.45687024242757 4.36012201718849 2445376.183389464 0.716060178383903 168.348195919129 13.6454194164889 78.8027756912552 3576354.17245234 T 39 CATAB v2.0f-lin.ifort 2020-Jun-23 15:22:42 2020-Jun-23 15:22
1993-Dec-10 14:03 < 00:01 Jupiter 1.72165496198225 1.7216544707579 1.72165545320729 3.61954455189653 3.48096820120537 2449332.085735265 0.477745618091613 100.772783100744 16.2044584697459 80.7806339305833 2736737.99832868 T 39 CATAB v2.0f-lin.ifort 2020-Jun-23 15:22:42 2020-Jun-23 15:22
2004-Sep-20 10:19 < 00:01 Jupiter 1.80923100984641 1.80923036880974 1.80923165088308 2.45392878671188 2.25509028667255 2453268.929667936 0.477688980944919 123.906559442025 29.5408704374367 73.6146013009437 2043209.97257861 T 39 CATAB v2.0f-lin.ifort 2020-Jun-23 15:22:42 2020-Jun-23 15:22
2101-Jan-28 12:27 00:01 Jupiter 1.74228016699492 1.74227954583756 1.74228078815724 3.93234140462171 3.80670382155445 2488462.019055965 1.2314312933493 177.917154466888 13.3664977197092 82.1417694022964 2953571.61991481 T 39 CATAB v2.0f-lin.ifort 2020-Jun-23 15:22:42 2020-Jun-23 15:22
2111-Dec-12 03:55 00:02 Jupiter 1.71204544417812 1.71204476026121 1.71204612809524 3.20896463546338 3.05089626376237 2492431.663184624 1.56533036859865 113.869868970742 37.2589770228628 -82.4923023785793 1972683.17639612 T 39 CATAB v2.0f-lin.ifort 2020-Jun-23 15:22:42 2020-Jun-23 15:22

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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