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THE IMCCE VIRTUAL OBSERVATORY
SOLAR SYSTEM PORTAL
Observatoire de Paris / CNRS

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Miriade Ephemeris Generator

Query form

This Web form is a user interface to the VO-compliant Web service Miriade. It allows to compute positional ephemerides of planets, major natural satellites, asteroids and comets (Ephemerides tab), and to plot visibility charts of solar system objects to prepare observing nights (ViSiON tab). Fill in the form of your choice, and submit the query by clicking the button at the bottom of the page.

More info...  ?

To fill in a form, enter your values in each input elements with the correct syntax, or click on the arrows to toggle the corresponding wizard. Click on the Validate or Add xxx button to confirm your choice. The request is submitted by clicking the button at the bottom of the form. The results are displayed at the end of the form, and can be downloaded by clicking on the dedicated buttons. If an error occurs, a message is displayed at the end of the form.

Read the documentation to get more information.

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Target Change
 Only planets  Only satellites  All
 Sun
 Mercury
 Venus
 Earth
 Moon (E-1)
 Mars
 Phobos (M-1)  Deimos (M-2)
 Jupiter
 Io (J-1)  Europe (J-2)  Ganymede (J-3)
 Callisto (J-4)  Amalthea (J-5)  Thebe (J-14)
 Saturn
 Mimas (S-1)  Encelade (S-2)  Tethys (S-3)
 Dione (S-4)  Rhea (S-5)  Titan (S-6)
 Hyperion (S-7)  Japet (S-8)
 Uranus
 Miranda (U-5)  Ariel (U-1)  Umbriel (U-2)
 Titania (U-3)  Oberon (U-4)
 Neptune
 Triton (N-1)  Nereide (N-2)  Naiade (N-3)
 Thalassa (N-4)  Despina (N-5)  Galatea (N-6)
 Larissa (N-7)  Proteus (N-8)

Validate

Asteroid number or designation: (e.g. 1 or 15905 or Ceres or 1999 TC36)
  Source: The Asteroid Orbital Elements Database

Validate

Comet name or designation: (e.g. P/2007 N1 or P/Borrelly or 126P)
  Source: IMCCE Cometary database

Validate

Epoch Change
Calendar
Year-Month-Day Hours Minutes Seconds
 
Current time  Reset time to 0h
Number of dates:   (< 5001) Time scale:    UTC  TT
Computation step:   

Validate

Enter a Julian day: 
Number of dates:   (< 5001) Time scale:    UTC  TT
Computation step:   

Validate

Reference center Change
Heliocenter
Geocenter
IAU observatory code   Source: IAU codes
Spacecraft

Validate

Advanced parameters Change
  • Planetary theory

    • INPOP
    • INPOP
    • DE405/LE405
    • DE406/LE406
    • DE403/LE403
  • Reference Plane

    • Equator
    • Equator
    • Ecliptic
  • Type of Coordinates

    • Spherical
    • Spherical
    • Rectangular
    • Dedicated to obs.
  • Type of Ephemeris

    • AstrometricJ2000
    • AstrometricJ2000
    • ApparentOfDate
    • MeanJ2000
    • MeanOfDate
 Change

Target Change
 Mercury
 Venus
 Mars
 Jupiter
 Saturn
 Uranus
 Neptune

Add planet(s)

Asteroid/Comet number or designation: (Example: 1 or 15905 or Ceres or 1999 TC36 or 26P or P/2005 S2...)
  Sources: The Asteroid Orbital Elements Database, The CometPro Orbital Elements Database

Add object

Epoch Change
Calendar Year-Month-Day
Number of dates:   (≤ 100)
Step size:   (day)

Validate

Start Julian day: 
Number of dates:   (≤ 100)
Step size:   (day)

Validate

Observer location Change
Define the location of the observer by its IAU observatory code (string of 3 chars, e.g. 007 for Paris observatory, France), or enter the geographic coordinates of the location as 3 values separated by a space character: <longitude> <latitude> <altitude>. The longitude and latitude must be in degrees, respectively negative towards east and south, and the altitude must be in meters (e.g. -2.336537 +48.8364 132.0)
Advanced parameters Change
Mime type of the response:   PDF  HTML
Visibility criteria: 
The criteria of visibility can be tuned by defining values or range of values for multiple parameters specifying the required conditions of for observation. The criteria are provided through the cuts parameter of the Web service, or by using the "Advanced parameters" item of the ViSiON query form. In both cases, they are defined by a coma separated list of tags written as an IDL structure:
<tag1>:<value1>, ..., <tagN>:<valueN>

The list of accepted tags is:

el:{min:<minval>,max:<maxval>}
Minimum and maximum elevation of the target, in degrees
mag:{min:<minval>,max:<maxval>}
Minimum and maximum apparent V magnitude of the target
phase:{min:<minval>,max:<maxval>}
Minimum and maximum solar phase angle, in degrees, for solar system objects only
elong:{sun:<val>,moon:<val>}
Minimum solar and lunar elongation, in degrees
diam:{min:<minval>,max:<maxval>,unit:<val>}
Minimum and maximum apparent diameter of the target, in the specified unit (sec, min, deg)
duration:<val>
Minimum time span during which all conditions are met, in minutes
event:'<val>'
Event defining the beginning and the end of the night, either sunrise/sunset: <val>=sun, or the civil, nautical, or astronomical twilights: <val>=civil|nautic|astro

Examples:

Set minimum elevation to 40°: el:{min:40.0}
Set elevation between 60° and 80°: el:{min:60.0,max:80.0}
Set maximum phase angle to 20°: phase:{max:20.0}
Set minimum time span during which conditions are met to 1h: duration:60.0
Set night begin/end to astronomical twilight: event:'astro'

All tags are optional. The default criteria of visibility are:

Elevation = 30° to 90 °
Magnitude = -30 to 90
Phase = 0° to 180°
Sun elongation = 30°
Moon elongation =
Diameter = 0.0 to 9999.0 arcsec
Duration = 10 minutes
Night limits = 'civil'
Sort entries: 
The order in which ViSiON lists the targets can be set via the simple sort parameter of the Web service, or by using the "Advanced parameters" item of the ViSiON query form. The sort parameter must be written at the last position, and can take the following values:
mv
Sort by apparent magnitude
diam
Sort by apparent diameter
RA
Sort by right ascencion [default]
Dec
Sort by declination
rate
Sort on non-sidereal rate
alt
Sort by the maximum altitude reached
az
Sort by the azimuth at maximum altitude
gLon
Sort by galatic longitude
gLat
Sort by galatic latitude
dObs
Sort by the range to observer
dSun
Sort by heliocentric distance
phase
Sort by phase angle
sunE
Sort by solar elongation
moonE
Sort by lunar elongation
type
Sort by target type (asteroid, planet, star...)

When sorting by target type, a second sorting parameter can be set, among the list above, with the following syntax: type>parameter, e.g.: type>dObs to sort according to target type, then according to the range to observer.

Validate

Moving target procedure @ ESO
Target Change
 Mercury
 Venus
 Mars
 Jupiter
 Saturn
 Uranus
 Neptune

Add planet(s)

Asteroid/Comet number or designation: (Example: 1 or 15905 or Ceres or 1999 TC36 or 26P or P/2005 S2...)
  Sources: The Asteroid Orbital Elements Database, The CometPro Orbital Elements Database

Add object

Epoch Change
Start Year-Month-Day h:m:s
Step size:  
End Year-Month-Day h:m:s

Validate

Start Julian day: 
Step size:  
End Julian day: 

Validate

Observer location Change
Select a site:
PAF parameters Change
Airmass limit:   
Sun elevation cutoff:   
Read the ESO moving target procedure documentation for more information. Airmass limit must be lower than 2.6, and Sun elevation cutoff must be lower than 0°.

Validate