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555 Norma (A905 AF)
Classification:
Main-belt Asteroid
SPK-ID:
2000555
[
Ephemeris
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Orbit Diagram
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Orbital Elements
|
Mission Design
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Physical Parameters
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Discovery Circumstances
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Close-Approach Data
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[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference:
JPL 38
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1499295032792856
3.208e-08
a
3.1977682128914
1.4103e-08
au
q
2.718328413130304
9.9535e-08
au
i
2.656065099948871
3.5782e-06
deg
node
130.2089448939682
8.3282e-05
deg
peri
358.5501665832816
8.4285e-05
deg
M
154.5226132382683
1.302e-05
deg
t
p
2458103.983179981548
(2017-Dec-16.48317998)
7.5559e-05
TDB
period
2088.66552566633
5.72
1.3817e-05
3.783e-08
d
yr
n
.1723588557268652
1.1402e-09
deg/d
Q
3.677208012652497
1.6217e-08
au
Orbit Determination Parameters
# obs. used (total)
3216
data-arc span
42309 days (115.84 yr)
first obs. used
1905-01-15
last obs. used
2020-11-16
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.43325
source
ORB
producer
Otto Matic
solution date
2020-Dec-18 01:54:26
Additional Information
Earth MOID
= 1.73331 au
Jupiter MOID
= 1.37905 au
T_jup
= 3.176
[ show covariance matrix ]
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
10.8
n/a
MPO267708
diameter
diameter
31.040
km
0.150
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)
rotation period
rot_per
19.508
h
n/a
LCDB (Rev. 2020-October); Warner et al., 2009
Published Reference List:
[Stephens, R.D. (2012) Minor Planet Bull. 39, 80-82.]
[Pilcher, F. (2017) Minor Planet Bull. 44, 112-114.]
geometric albedo
albedo
0.119
0.018
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)
SMASSII spectral type
spec_B
B
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)
555 Norma (A905 AF)
Discovered 1905-Jan-14 by Wolf, M. at Heidelberg
Reference:
DISCOVERY.DB
Last Updated:
2003-08-29
[ show close-approach data ]
Alternate Designations
A905 AF
= 1928 FS = 1939 BA = 1950 CC = 1954 UH2 = 1968 HE1
[
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
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2021-Jan-24 23:30 UT
(server date/time)
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