+ View the NASA Portal
+ Center for Near-Earth Object Studies
IMPORTANT:
The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.
Please visit
this page
for more details.
Don't show this message again
JPL Small-Body Database Browser
Search:
[
help
]
3530 Hammel (1981 EC20)
Classification:
Main-belt Asteroid
SPK-ID:
2003530
[
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 24
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2262882618954534
3.3957e-08
a
2.40058240295279
8.987e-09
au
q
1.857358783451792
8.2567e-08
au
i
1.17250066975043
3.7051e-06
deg
node
262.6474859309347
0.00019999
deg
peri
75.9468014337284
0.00020017
deg
M
296.1201718896169
9.5492e-06
deg
t
p
2458841.565239898768
(2019-Dec-24.06523990)
3.6591e-05
TDB
period
1358.54289109226
3.72
7.6289e-06
2.089e-08
d
yr
n
.2649897933738125
1.4881e-09
deg/d
Q
2.943806022453788
1.1021e-08
au
Orbit Determination Parameters
# obs. used (total)
1713
data-arc span
16032 days (43.89 yr)
first obs. used
1975-12-01
last obs. used
2019-10-23
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.52131
source
ORB
producer
Otto Matic
solution date
2019-Nov-07 02:27:03
Additional Information
Earth MOID
= .847892 au
Jupiter MOID
= 2.44955 au
T_jup
= 3.490
[ show covariance matrix ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
14.2
n/a
MPO439098
diameter
diameter
5.305
km
0.619
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.173
0.059
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
3530 Hammel (1981 EC20)
Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference:
DISCOVERY.DB
Last Updated:
2003-08-29
Alternate Designations
1981 EC20
= 1975 XG1
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
2019-Dec-12 19:18 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin