Collaborative Occultation Resources and Archive (CORA)

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

2022-09-30 / 4UC 492-022219 / (1021) Flammario

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Peter Tickner O+ CCD M356 UK GPS+ 03:45:13 03:46:30.12 03:46:34.56 03:47:47 0.13 0.19 4.44 75.5
2 show Eberhard Bredner O+ VID M254 DE GPS++ 03:40:00 03:47:01.73 03:47:08.77 03:50:00 0.33 0.33 7.04 119.7
3 show Henk De Groot O+ VID M356 NL GPS++ 03:44:03 03:46:54.21 03:47:01.4 03:49:31 0.16 0.5 7.19 122.2
4 show Jan-Maarten Winkel O+ VID M356 NL GPS++ 03:46:01 03:46:56.0 03:47:02.7 03:48:01 0.3 0.3 6.70 113.9
5 show Tim Haymes O+ CCD M280 UK GPS++ 03:45:10 03:46:28.4 03:46:35.0 03:48:10 1.1 1.1 6.60 112.2
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

5 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#71 : 19b49815-8654-4a18-a6a0-99489d76845a [db: observed]

Using prediction 19b49815-8654-4a18-a6a0-99489d76845a 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:
Size = 127 x 57 km
a',b' = 63.5, 28.6 km
X0,Y0 = -277.2, 8.7 km
Mean diameter = 85 km

From 5 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: 2022-09-30, 03:46 UT (JD = 2459852.657)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 861None12.152 216°, 55° 2.448182e611670.70.0° NoneNone not scaled 2016-01-04
# 862None12.152 32°, 22° 2.448182e611670.70.0° 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] : 19b49815-8654-4a18-a6a0-99489d76845a [observed]

 Occultation Date + Time   : 2022-09-30 at 03:48:44 UT +/- 0.01 min  [1]
 Object Designation        : (1021) Flammario
 Orbit Class               : MBA
 Star Designation          : GDR3 3325344898122690176
 Star Coordinates (ICRF)   : RA = 06 16 49.1177, DE = +08 19 44.160  [2]
 Star Magnitudes           : G = 14.02 mag, RP = 13.22 mag, BP = 14.69 mag
 Object Magnitude          : V = 13.0 mag
 Estimated Magnitude Drop  : 0.4 mag
 Estimated Max. Duration   : 5.9 sec
 Object Mean Diameter      : 99 km  (src: astorb)
 Speed of the shadow       : 17.0 km/s
 Elongation to Moon & Sun  : 142° (sunlit = 20%), Sun = 93°
 Cross-track uncertainty   : 3.3 mas = 4 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#71

 
 [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)