MESSENGER Radio Science Tracking and Navigation (TNF) Data Products
Collection
Short Name:
mess_rs_raw_tnf.
Date:
25 Apr 2025 01:58:35
Publisher:
Planetary Data System
Description:
This is the collection of Radio Science Tracking and Navigation (TNF)
data products acquired during the MESSENGER mission. Data were
originally stored as chronological records in DSN format TRK-2-34; but
they have been sorted according to data type (retaining chronological
order within each data type) during migration from PDS3 to PDS4.
Predictions of stellar occultations by the main planetary satellites
Short Name:
voccdb.epn_core
Date:
26 Feb 2025 14:03:55
Publisher:
Paris Astronomical Data Centre
Description:
The VOccDB database provides prediction and parameters of stellar
occultations by the main planetary satellites. Observations of a
stellar occultations help to better determine the size and the shape
of the occulting body, as well as its astrometric position at the
milli-arcsecond level precision. Only the main moons of giant planets
Jupiter, Saturn, Uranus and Neptune are considered in the event
prediction database. Predictions are provided over period 2023-2032,
up to visual magnitude 12 for the biggest satellites, and magnitude 14
for other satellites. For each stellar occultation event prediction,
the database provides circumstances and observational data, date and
timing of the occultation, star position and magnitude, excepted
duration, etc.
"The growth of the Tharsis volcanic complex on Mars during
Noachian/Hesperian era induced a reorientation of the spin axis of the
planet (true polar wander). This service gives access to a map of Mars
topography before Tharsis formation (Early Noachian) and a map of Mars
topography before true polar wander (Late Noachian/Early Esperian),
from the model described in Bouley, S., Baratoux, D., Matsuyama, I. et
al. Late Tharsis formation and implications for early Mars. Nature
531, 344â347 (2016). https://doi.org/10.1038/nature17171 ."
