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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 42
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2704085670362982
3.7465e-08
a
3.17013617586426
1.2746e-08
au
q
2.312904195238875
1.2013e-07
au
i
16.86413254891921
4.1173e-06
deg
node
58.88651170682658
1.404e-05
deg
peri
302.1629281844198
1.5375e-05
deg
M
101.7637079068855
7.9943e-06
deg
t
p
2458417.718541521882
(2018-Oct-26.21854152)
4.4421e-05
TDB
period
2061.651735843706
5.64
1.2433e-05
3.404e-08
d
yr
n
.1746172710652676
1.0531e-09
deg/d
Q
4.027368156489645
1.6192e-08
au
Orbit Determination Parameters
# obs. used (total)
3768
data-arc span
40344 days (110.46 yr)
first obs. used
1910-06-03
last obs. used
2020-11-16
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.32429
source
ORB
producer
Otto Matic
solution date
2020-Dec-18 01:56:52
Additional Information
Earth MOID
= 1.36071 au
Jupiter MOID
= 1.68216 au
T_jup
= 3.080
[ hide covariance matrix ]
Orbital Elements at Epoch 2456508.5 (2013-Aug-04.0) TDB
Reference:
JPL 42
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2638808228397039
3.688e-08
q
2.338662501434696
1.1677e-07
au
t
p
2456345.465294982057
(2013-Feb-21.96529498)
4.3638e-05
TDB
node
59.57681586937531
1.4045e-05
deg
peri
300.8375762298455
1.5557e-05
deg
i
16.8389722711042
4.1098e-06
deg
Orbit Determination Parameters
# obs. used (total)
3768
data-arc span
40344 days (110.46 yr)
first obs. used
1910-06-03
last obs. used
2020-11-16
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.32429
source
ORB
producer
Otto Matic
solution date
2020-Dec-18 01:56:52
Additional Information
Jupiter MOID
= 1.68216 au
T_jup
= 3.080
Orbit Covariance (6×6)
e
q
tp
node
peri
i
e
1.360130171882536E-15
-4.292506940292552E-15
2.091485476099839E-13
4.086403499398648E-16
1.647304114968259E-14
1.747815950970703E-15
q
-4.292506940292552E-15
1.363433359784037E-14
-6.116366135861861E-13
1.088538346487688E-15
-4.738437391103613E-14
-3.931702113918375E-15
tp
2.091485476099839E-13
-6.116366135861861E-13
1.904245204406944E-9
-4.307022035169682E-12
3.228086400102037E-10
-3.708226749179261E-12
node
4.086403499398648E-16
1.088538346487688E-15
-4.307022035169682E-12
1.972615430454802E-10
-1.886115108331124E-10
-6.397584378278275E-12
peri
1.647304114968259E-14
-4.738437391103613E-14
3.228086400102037E-10
-1.886115108331124E-10
2.420171905237532E-10
5.583052307060022E-12
i
1.747815950970703E-15
-3.931702113918375E-15
-3.708226749179261E-12
-6.397584378278275E-12
5.583052307060022E-12
1.689016558081348E-11
[
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. 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.DB
Last Updated:
2003-08-29
[ show close-approach data ]
Alternate Designations
A917 WA
= 1945 WA = 1952 BN = A910 LA = A916 NA = A917 UD
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
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Physical Parameters
|
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|
Close-Approach Data
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2021-Jan-17 19:54 UT
(server date/time)
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