Collaborative Occultation Resources and Archive (CORA)

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

2013-04-25 / TYC 0844-00294-1 / (255) Oppavia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Simone Bolzoni O+ VIS M203 IT RAD+ 20:12:00 20:15:00.53 20:15:05.76 20:18:00 0.3 0.3 5.23 31.4
2 show Jean Vilar O+ VID M200 FR GPS++ 20:13:05 20:14:08.05 20:14:15.68 20:15:02 7.63 45.8
3 show Carlo Gualdoni O- VID M250 IT 20:12:00 20:19:00
4 show Alberto Ossola O- VID M230 CH 20:13:25 20:16:59
5 show Stefano Sposetti O- VID M400 CH 20:10:25 20:18:08
6 show Jose De Queiroz O- VID M900 CH 20:12:03 20:16:24
7 show F. Van Den Abbeel O- CCD M200 BE 20:12:02 20:15:03
8 show Harrie Rutten O- VID M356 NL 20:11:00 20:16:00
9 show Henk De Groot O- VID M356 NL 20:10:14 20:16:49
10 show Jan-Maarten Winkel O- VID M310 NL 20:12:00 20:14:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

10 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#63 : f86c3338-942b-4f3f-94e4-f54b6d85f676 [db: observed]

Using prediction f86c3338-942b-4f3f-94e4-f54b6d85f676 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 = -1758.3, 12.7 km
Circular diameter = 47 km

From 2 chords (VID,VIS)








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: 2013-04-25, 20:15 UT (JD = 2456408.344)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 49391.019.497 134°, 46° 2.45723e6-821.70.0° 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] : f86c3338-942b-4f3f-94e4-f54b6d85f676 [observed]

 Occultation Date + Time   : 2013-04-25 at 20:22:48 UT +/- 0.06 min  [1]
 Object Designation        : (255) Oppavia
 Orbit Class               : MBA
 Star Designation          : GDR3 3887407025965510272
 Star Coordinates (ICRF)   : RA = 10 25 47.3909, DE = +14 30 27.083  [2]
 Star Magnitudes           : G = 11.63 mag, RP = 11.14 mag, BP = 11.95 mag
 Object Magnitude          : V = 14.99 mag
 Estimated Magnitude Drop  : 3.4 mag
 Estimated Max. Duration   : 9.5 sec
 Object Mean Diameter      : 57 km  (src: astorb)
 Speed of the shadow       : 6.0 km/s
 Elongation to Moon & Sun  : 63° (sunlit = 100%), Sun = 117°
 Cross-track uncertainty   : 3.3 mas = 4 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 0.81 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)