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JPL Small-Body Database Browser
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27939 (1997 LL2)
Classification:
Main-belt Asteroid
SPK-ID:
2027939
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference:
JPL 28
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1531780823612625
4.0964e-08
a
2.304135744429153
7.4432e-09
au
q
1.951192649597455
9.5064e-08
au
i
5.963671673410591
3.9273e-06
deg
node
208.325922108085
3.8856e-05
deg
peri
135.0100161328991
4.0434e-05
deg
M
11.16331763900171
1.1233e-05
deg
t
p
2458560.885762567361
(2019-Mar-18.38576257)
3.9812e-05
TDB
period
1277.498852664143
3.50
6.1902e-06
1.695e-08
d
yr
n
.2818006444774826
1.3655e-09
deg/d
Q
2.657078839260851
8.5833e-09
au
Orbit Determination Parameters
# obs. used (total)
1254
data-arc span
8718 days (23.87 yr)
first obs. used
1996-01-15
last obs. used
2019-11-28
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.53456
source
ORB
producer
Otto Matic
solution date
2019-Dec-04 01:09:47
Additional Information
Earth MOID
= .948423 au
Jupiter MOID
= 2.75765 au
T_jup
= 3.566
[ show covariance matrix ]
[
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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Discovery Circumstances
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
15.0
n/a
MPO347730
diameter
diameter
2.983
km
0.586
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.239
0.100
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
27939 (1997 LL2)
Discovered 1997-Jun-05 by Spacewatch at Kitt Peak
Reference:
20010902/Numbers.arc
Last Updated:
2004-04-19
Alternate Designations
1997 LL2
= 1996 AF12
[
Ephemeris
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Orbit Diagram
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Orbital Elements
|
Mission Design
|
Physical Parameters
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Discovery Circumstances
]
2019-Dec-14 08:19 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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Alan B. Chamberlin