Collaborative Occultation Resources and Archive (CORA)

Occultations | Observations | Reports | Info + Credits | JOA | Admin | Login

2022-07-02 / TYC 0526-00213-1 / (95) Arethusa

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Carlos Perello O+ VID M500 ES GPS++ 20:53:36 20:55:33.3 20:55:48.6 20:57:31 1.3 1.3 15.30 123.9
2 show Antoni Selva O+ VID M200 ES GPS++ 20:53:33 20:55:35.18 20:55:46.46 20:57:32 0.24 0.16 11.28 91.4
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#63 : 8ffe3ac8-147d-4789-8b58-2e16116583c3 [db: observed]

Using prediction 8ffe3ac8-147d-4789-8b58-2e16116583c3 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 = -660.5, 29.9 km
Circular diameter = 134 km

From 2 chords (VID)








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: 2022-07-02, 20:55 UT (JD = 2459763.372)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 294None8.702 149°, 33° 2.444085e615678.40.0° None2011-04-11 147.0 +/- 32.0 km 2011-02-16
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] : 8ffe3ac8-147d-4789-8b58-2e16116583c3 [observed]

 Occultation Date + Time   : 2022-07-02 at 20:43:03 UT +/- 0.02 min  [1]
 Object Designation        : (95) Arethusa
 Orbit Class               : MBA
 Star Designation          : GDR3 2690252344667440128
 Star Coordinates (ICRF)   : RA = 21 06 35.4206, DE = +00 32 49.146  [2]
 Star Magnitudes           : G = 10.48 mag, RP = 9.78 mag, BP = 11.05 mag
 Object Magnitude          : V = 12.84 mag
 Estimated Magnitude Drop  : 2.5 mag
 Estimated Max. Duration   : 16.7 sec
 Object Mean Diameter      : 136 km  (src: astorb)
 Speed of the shadow       : 8.1 km/s
 Elongation to Moon & Sun  : 158° (sunlit = 12%), Sun = 139°
 Cross-track uncertainty   : 2.3 mas = 3 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#63

 
 [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
Aladin Lite direct link (has Gaia overlay)