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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2701452410651169 4.1527e-08  
a 3.169914948171462 1.3535e-08 au
q 2.313577510341765 1.3438e-07 au
i 16.86623795461373 4.492e-06 deg
node 58.89339294504821 1.4769e-05 deg
peri 302.1650578655892 1.6064e-05 deg
M 31.93524446128868 7.8211e-06 deg
tp 2458417.632054422869
(2018-Oct-26.13205442)
4.4378e-05 TDB
period 2061.435931313072
5.64
1.3203e-05
3.615e-08
d
yr
n .1746355511377407 1.1185e-09 deg/d
Q 4.026252386001159 1.7192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3339  
   data-arc span      39999 days (109.51 yr)  
   first obs. used      1910-06-03  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34634  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:50:15  

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 1.98591915761486 1.98591841711897 1.98591989811505 4.4568691418672 4.3601209104963 2445376.183529136 0.725139394770618 170.356167924877 13.9235446028062 78.9602167538446 3431450.8597793 T 35 CATAB v2.0f-lin.ifort 2019-Dec-13 20:50:31 2019-Dec-13 20:50
1993-Dec-10 14:03 < 00:01 Jupiter 1.72165493139324 1.72165442017777 1.7216554426095 3.6195427752756 3.48096635134651 2449332.085760172 0.480843257928861 105.167397134166 16.7196479496362 80.4685361215172 2554242.33313288 T 35 CATAB v2.0f-lin.ifort 2019-Dec-13 20:50:31 2019-Dec-13 20:50
2004-Sep-20 10:19 < 00:01 Jupiter 1.80923049607377 1.80922983703392 1.80923115511351 2.4539272390861 2.25508854363342 2453268.929648274 0.506920017790388 137.395594614845 29.8204929588721 74.1196849103805 1852770.27874343 T 35 CATAB v2.0f-lin.ifort 2019-Dec-13 20:50:31 2019-Dec-13 20:50
2101-Jan-28 12:27 00:01 Jupiter 1.74228009663292 1.74227939818877 1.74228079508351 3.93233909111117 3.80670142653046 2488462.018795052 1.30891311219385 197.248706992839 13.6184797927392 81.778849986525 2723219.47101 T 35 CATAB v2.0f-lin.ifort 2019-Dec-13 20:50:31 2019-Dec-13 20:50
2111-Dec-12 03:54 00:02 Jupiter 1.71204523115038 1.71204454788616 1.71204591441489 3.20896190133125 3.05089336779564 2492431.662828153 1.65246886731525 127.86855791524 38.177276903541 -83.7910434372048 1782036.30848857 T 35 CATAB v2.0f-lin.ifort 2019-Dec-13 20:50:31 2019-Dec-13 20:50

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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