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2022-01-05 / TYC 1295-01742-1 / (270) Anahita

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Michael OConnell O+ VID M355 IE GPS++ 23:35:53 23:36:53.98 23:36:54.94 23:37:56 0.16 0.16 0.96 8.0
2 show Mark Fairfax O+ CCD V112 UK NTP 23:30:02 23:36:05.08 23:36:11.41 23:38:00 0.36 0.36 6.33 52.5
3 show William Stewart O+ VID M279 UK GPS++ 23:34:52 23:36:19.23 23:36:24.43 23:37:51 0.08 0.08 5.20 43.2
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#133 : 7870e84c-d68a-47d0-805b-3999964966eb [db: observed]

Using prediction 7870e84c-d68a-47d0-805b-3999964966eb 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:
Ellipse profile fit was not successful. Trying circular fit.

Circular diameter = 73 km

From 3 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: 2022-01-05, 23:36 UT (JD = 2459585.483)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 1183None15.059 15°, -50° 2.442687e616898.50.0° NoneNone not scaled 2016-01-04
# 1184None15.059 207°, -59° 2.442687e616898.50.0° NoneNone not scaled 2016-01-04
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] : 7870e84c-d68a-47d0-805b-3999964966eb [observed]

 Occultation Date + Time   : 2022-01-05 at 23:39:35 UT +/- 0.01 min  [1]
 Object Designation        : (270) Anahita
 Orbit Class               : MBA
 Star Designation          : GDR3 3414653142403834240
 Star Coordinates (ICRF)   : RA = 05 17 13.0525, DE = +21 57 36.615  [2]
 Star Magnitudes           : G = 11.98 mag, RP = 11.67 mag, BP = 12.15 mag
 Object Magnitude          : V = 12.09 mag
 Estimated Magnitude Drop  : 0.8 mag
 Estimated Max. Duration   : 6.1 sec
 Object Mean Diameter      : 51 km  (src: astorb)
 Speed of the shadow       : 8.3 km/s
 Elongation to Moon & Sun  : 110° (sunlit = 14%), Sun = 154°
 Cross-track uncertainty   : 1.0 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.19 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#133

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

More Data and Informations
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