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2018-01-27 / TYC 1399-01064-1 / (175) Andromache

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Emmanuel Arbouch O+ CCD M114 FR NTP 18:36:32 18:36:42.68 18:36:50.19 18:36:57 0.31 0.43 7.51 123.2
2 show Pietro Baruffetti O+ VID M200 IT GPS++ 18:35:00 18:36:35.18 18:36:40.94 18:38:00 0.04 0.04 5.76 94.5
3 show Patrick Sogorb O- VID M203 FR 18:34:43 18:38:43
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

3 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#74 : 994b8351-4cbe-478b-bffb-2df92f7cc01d [db: observed]

Using prediction 994b8351-4cbe-478b-bffb-2df92f7cc01d for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

 Auto-Fit Result:
X0,Y0 = -617.2, 1.0 km
Circular diameter = 124 km

From 2 chords (VID,CCD)








You can enter space separated chord numbers (example: 11 4 8) or a method like VIS to ignore all visual timings, or a time source like RAD and NTP (but not GPS).
If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2018-01-27, 18:36 UT (JD = 2458146.275)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 47091.08.328 28°, 89° 2.457228e6918.30.0° None2020-10-05 not scaled 2019-10-23
Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

 
Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 994b8351-4cbe-478b-bffb-2df92f7cc01d [observed]

 Occultation Date + Time   : 2018-01-27 at 18:31:18 UT +/- 0.01 min  [1]
 Object Designation        : (175) Andromache
 Orbit Class               : MBA
 Star Designation          : GDR3 0685995685505888128
 Star Coordinates (ICRF)   : RA = 08 52 23.5116, DE = +21 53 25.159  [2]
 Star Magnitudes           : G = 11.23 mag, RP = 10.46 mag, BP = 11.48 mag
 Object Magnitude          : V = 13.94 mag
 Estimated Magnitude Drop  : 2.8 mag
 Estimated Max. Duration   : 6.1 sec
 Object Mean Diameter      : 101 km  (src: astorb)
 Speed of the shadow       : 16.4 km/s
 Elongation to Moon & Sun  : 55° (sunlit = 80%), Sun = 176°
 Cross-track uncertainty   : 1.6 mas = 3 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 27.3 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#74

 Object is a Gaia mass determination target !

 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
(If error 404: link not valid which means no data available)

Aladin Sky Atlas
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