urn:nasa:pds:uranus_occ_u1052_irtf_320cm:data:2200nm_predicted_ring_event_times
1.0
Predicted Ring Event Times for Uranus System Occultation of Star u1052 (UCAC2 22296665) Observed from the IRTF 320cm Telescope
1.14.0.0
Product_Observational
French, Richard G.; McGhee-French, Colleen A.; Gordon, Mitchell K.
2020
uranus rings
uranus rings stellar occultation
uranus rings stellar occultation predicted event times
Approximate predicted ring event times (Earth Received Time) for the occultation of star u1052 (UCAC2 22296665) by the rings of Uranus. Should not be used for detailed ring orbit reconstruction or for the determination of the Uranus system geometry.
2021-04-05
1.0
Initial version
1988-05-12T13:00:00.0160Z
1988-05-12T15:00:00.0160Z
Science
Calibrated
These are the approximate predicted ring event times (Earth Received Time) for the occultation of star u1052 (UCAC2 22296665) by the rings of Uranus. Should not be used for detailed ring orbit reconstruction or for the determination of the Uranus system geometry.
Infrared
Ring-Moon Systems
Ring Occultation Profile
Earth-based Observations of Uranus System Stellar Occultations
Observing Campaign
urn:nasa:pds:context:investigation:observing_campaign.earth-based-uranus-stellar-occultations
data_to_investigation
IRTF 320cm Telescope
Infra Red Telescope Facility-Maunakea
Host
urn:nasa:pds:context:facility:observatory.irtf-maunakea
is_facility
IRTF 3.2m
Telescope
urn:nasa:pds:context:telescope:irtf-maunakea.3m2
is_telescope
Generic InSb High Speed Photometer
Instrument
urn:nasa:pds:context:instrument:multi-host.generic_insp_hsp
is_instrument
Uranus Rings
Uranian Ring System
Ring
urn:nasa:pds:context:target:ring.uranus.rings
data_to_target
SPK
ura111.bsp
SPK
vgr2.ura111.bsp
SPK
earthstns_itrf93_040916.bsp
BPC
earth_720101_031229.bpc
LSK
naif0012.tls
These kernel files were used in the generation of the products in the parent bundle. Some or all of them may not have been used directly in the generation of this product.
stellar
both
both
N
individual
UCAC2 22296665
1903.00000
2416.00000
-74.81916
15.18084
urn:nasa:pds:uranus_occ_support:document:earth-based-uranus-stellar-occultations-user-guide
data_to_document
The User Guide for Earth-based Uranus Stellar Occultations.
urn:nasa:pds:uranus_occ_u1052_irtf_320cm:browse:2200nm_obs_geom
data_to_browse
Diagram of the Uranus system showing the occultation track.
urn:nasa:pds:uranus_occ_u1052_irtf_320cm:browse:2200nm_earth
data_to_browse
Diagram of the view of the Earth from Uranus at mid-occultation Time.
urn:nasa:pds:uranus_occ_u1052_irtf_320cm:browse:2200nm_alt
data_to_browse
Plot of the altitude (in degrees) of Uranus and the sun relative to the horizon over the duration of the occulation.
urn:nasa:pds:uranus_occ_support
data_to_resource
The support bundle for all of the Earth-based Uranus system occultations.
urn:nasa:pds:uranus_occ_support:data:uranus_occultation_ring_fit_rfrench_20201201::1.0
data_to_resource
The fitted model of the ring system upon which the data are based.
Elliot et al. (1984). "Structure of the Uranian rings. I. Square-well model and particle-size constraints" Astron J. 89, 1587-1603. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1984AJ.....89.1587E&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf
u1052_irtf_320cm_2200nm_predicted_ring_event_times.tab
data
2021-04-05T12:45:16Z
0
153
UTF-8 Text
Provides the column headers, separated by commas, for the data table.
153
12
This table provides approximate predicted ring event times (Earth Received Time) for the occultation of star u1052 (UCAC2 22296665) by the rings of Uranus, based on approximate keplerian orbital elements for the ring model. For each ring, the prediction is based on the individual plane of that ring. These predicted times are primarily to enable users to search for or identify particular ring events in the time series data for this occultation, and should not be used for detailed ring orbit reconstruction or for the determination of the Uranus system geometry.
Carriage-Return Line-Feed
11
0
159
Ring
1
1
ASCII_String
10
Name of the ring.
Direction
2
12
ASCII_String
8
Indicates whether this timing is for ingress or egress.
UTC(Earth)
3
21
ASCII_Date_Time_YMD_UTC
26
Predicted approximate midtime at the earthbased observer.
UTC(@ring)
4
48
ASCII_Date_Time_YMD_UTC
26
Predicted approximate midtime at the ring.
R_model
5
75
ASCII_Real
11
Kilometer
R_model is the predicted orbital radius, in the plane of the ring, for the inertial longitude probed by the occultation ray at the ring plane intercept time corresponding to the measured Earth-received-time of the midpoint of the square-well model used to fit a given ring profile.
R-dot
6
87
ASCII_Real
11
Kilometer/Second
R-dot is the radial velocity in the ring plane of the occultation ray, computed at the ring plane intercept time corresponding to the measured Earth-received-time of the midpoint of the square-well model used to fit a given ring profile.
Anomaly
7
99
ASCII_Real
11
Degree
The true anomaly probed by the occultation ray at the ring plane intercept time.
Sin B
8
111
ASCII_Real
11
Kilometer
Sine of the observed ring elevation. Observed ring elevation is an angle measured at a point in the ring plane, starting from the ring plane to the direction of a photon heading to the observer. This angle is positive on the side of the ring plane defined by positive angular momentum, and negative on the opposite side. Values range from -90 to +90 in units of degrees. Note: The direction of positive angular momentum points toward the IAU-defined north side of the ring plane for Jupiter, Saturn and Neptune, but IAU-defined south side of the ring plane for Uranus.
Longitude
9
123
ASCII_Real
11
Degree
The Ring Longitude probed by the occultation ray at the ring plane intercept time. Ring Longitude is defined as the inertial longitude of a ring feature relative to the prime meridian. In planetary ring systems, the prime meridian is the ascending node of the planet’s invariable plane on the Earth’s mean equator of J2000. Longitudes are measured in the direction of orbital motion along the planet’s invariable plane to the ring’s ascending node, and thence along the ring plane. Values range from 0 to 360 in units of degrees. Note: The invariable plane of a planet is equivalent to its equatorial plane for every ringed planet except Neptune.
Altitude planet
10
135
ASCII_Real
11
Degree
The altitude of the planet at the time specified by UTC (Earth).
Altitude Sun
11
147
ASCII_Real
11
Degree
The altitude of the sun at the time specified by UTC (Earth).
u1052_irtf_320cm_2200nm_predicted_ring_event_times.txt
2016-07-13T15:33:44Z
This file provides some supplemental information regarding input parameters.
0
UTF-8 Text
Carriage-Return Line-Feed
u1052_irtf_320cm_2200nm_predicted_ring_event_times.pdf
2016-07-13T15:33:44Z
This file provides some supplemental information regarding input parameters.
0
pdf