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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2705832499101155 2.0134e-08  
a 3.169921815552181 1.2251e-08 au
q 2.312194068739098 6.5197e-08 au
i 16.86376313310128 9.2159e-07 deg
node 58.87526540454575 5.4128e-06 deg
peri 302.1741219171291 5.9663e-06 deg
M 136.6708659718976 6.9306e-06 deg
tp 2458417.891251595929
(2018-Oct-26.39125160)
3.7112e-05 TDB
period 2061.44263023399
5.64
1.1951e-05
3.272e-08
d
yr
n .1746349836372294 1.0124e-09 deg/d
Q 4.027649562365264 1.5566e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4078  
   data-arc span      40472 days (110.81 yr)  
   first obs. used      1910-06-03  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .31819  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:58:19  

Additional Information
 Earth MOID = 1.35862 au 
 Jupiter MOID = 1.68301 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 9.37   n/a E2021B10  
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. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2003) Minor Planet Bull. 30, 61-64.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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 1.98591877855989 1.98591821875995 1.98591933836254 4.45687002791054 4.36012179806941 2445376.183362355 0.657519907041462 123.118654734788 3.67705953728218 77.6867541878737 16837766.1999189 T 47 CATAB v2.0g-lin.ifort 2021-May-03 18:59:37 2021-May-03 18:59
1993-Dec-10 14:03 < 00:01 Jupiter 1.72165496068762 1.72165473147941 1.72165518989641 3.61954449811374 3.480968145956 2449332.085715447 0.411908218334012 59.8671630208547 5.8585979014557 81.7038690436833 9106282.33411726 T 47 CATAB v2.0g-lin.ifort 2021-May-03 18:59:37 2021-May-03 18:59
2004-Sep-20 10:19 < 00:01 Jupiter 1.80923100025485 1.80923083033214 1.80923117017766 2.45392869589796 2.25509018789755 2453268.929643197 0.285701207750959 48.634821064792 12.3130093519172 72.045304231367 4178112.1539984 T 47 CATAB v2.0g-lin.ifort 2021-May-03 18:59:37 2021-May-03 18:59
2101-Jan-28 12:28 00:01 Jupiter 1.7422802163616 1.74227978466261 1.74228064806593 3.93234134585203 3.80670376516926 2488462.019119226 1.14892672689507 161.825384227695 5.41347649901892 83.3839413906059 11476648.1397031 T 47 CATAB v2.0g-lin.ifort 2021-May-03 18:59:37 2021-May-03 18:59
2111-Dec-12 03:55 00:01 Jupiter 1.71204540460894 1.71204489680653 1.71204591241271 3.20896491551098 3.05089655546724 2492431.663310204 1.45935429554608 97.1764523338937 16.8921710703659 -72.7298417740301 6495493.40011365 T 47 CATAB v2.0g-lin.ifort 2021-May-03 18:59:37 2021-May-03 18:59

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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