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4895 Embla (1986 TK4)
Classification:
Main-belt Asteroid
SPK-ID:
2004895
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
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Close-Approach Data
]
[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference:
JPL 34
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2367060108991335
4.3567e-08
a
2.354159749006697
8.1695e-09
au
q
1.796915985800017
1.0021e-07
au
i
7.127228911813433
3.8336e-06
deg
node
38.47285989587185
2.7453e-05
deg
peri
342.1022253338025
2.8296e-05
deg
M
167.6765337997516
8.5493e-06
deg
t
p
2458585.999686621883
(2019-Apr-12.49968662)
2.9705e-05
TDB
period
1319.326609412829
3.61
6.8676e-06
1.88e-08
d
yr
n
.2728664740266394
1.4204e-09
deg/d
Q
2.911403512213378
1.0103e-08
au
Orbit Determination Parameters
# obs. used (total)
2219
data-arc span
24049 days (65.84 yr)
first obs. used
1955-03-22
last obs. used
2021-01-23
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.4692
source
ORB
producer
Otto Matic
solution date
2021-Feb-24 01:21:03
Additional Information
Earth MOID
= .800288 au
Jupiter MOID
= 2.54892 au
T_jup
= 3.507
[ show covariance matrix ]
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Orbit Diagram
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Orbital Elements
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Close-Approach Data
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
13.59
n/a
E2021B10
diameter
diameter
5.317
km
0.149
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
rotation period
rot_per
14.90
h
n/a
LCDB (Rev. 2020-October); Warner et al., 2009
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm]
[Hills, K. (2017) Minor Planet Bull. 44, 114-115.]
geometric albedo
albedo
0.216
0.021
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
4895 Embla (1986 TK4)
Discovered 1986-Oct-13 by Jensen, P. at Brorfelde
Reference:
DISCOVERY.DB
Last Updated:
2003-08-29
[ show close-approach data ]
Alternate Designations
1986 TK4
= 1939 TH = 1968 UM = 1979 YR
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
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Close-Approach Data
]
2021-Mar-07 08:30 UT
(server date/time)
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Ryan S. Park
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