Collaborative Occultation Resources and Archive (CORA)

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

2003-07-17 / TYC 5140-03455-1 / (205) Martha

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Oscar Canales O+ VIS M200 ES RAD 22:36:42 22:42:03.0 22:42:08.1 22:46:15 0.3 0.2 5.10 57.1
2 show Jean Lecacheux O+ VIS M252 ES GPS++ 22:38:00 22:41:51.31 22:41:56.92 22:45:48 0.13 0.10 5.61 62.8
3 show C. Buil et al O+ CCD M600 FR RAD 22:38:40 22:41:51.9 22:41:55.4 22:44:41 0.1 0.1 3.50 39.2
4 show Francois Colas O+ CCD M1050 FR PHONE 22:30:00 22:41:51.75 22:41:55.20 22:50:00 0.21 0.21 3.45 38.6
5 show Philippe Bernascolle O+ VIS M280 FR PHONE 22:40:01 22:41:11.54 22:41:16.05 22:41:52 0.6 0.3 4.51 50.5
6 show Raymond Poncy O+ CCD M254 FR RAD 22:40:45 22:41:23.9 22:41:25.7 22:42:10 1.80 20.2
7 show Christian Barret O+ VIS M200 FR
8 show Alberto Dalle Donne O+ VIS M200 IT RAD 22:35:00 22:40:33.9 22:40:41.9 22:45:00 0.3 1.0 8.00 89.6
9 show Franco Tulipani O+ VIS M400 IT 22:35:00 22:40:31.8 22:40:36.2 22:44:00 4.40 49.3
10 show M. Caleffi et al O+ VID M400 IT RAD 22:35:00 22:40:33.36 22:40:37.44 22:45:00 0.02 0.02 4.08 45.7
11 show Rui Goncalves O- CCD M254 PT
12 show Carles Schnabel O- VIS M210 ES 22:37:00 22:48:00
13 show Jose-Alberto Berdejo O- VIS M150 ES 22:33:46 22:45:30
14 show Alex Roca O- VIS M200 ES 22:37:00 22:48:00
15 show E. Pierantoni et al O- VIS M200 IT 22:35:00 22:45:00
16 show Eric Frappa O- VIS M203 FR 22:36:04 22:45:41
17 show Emilian Skrzynecki O- VIS M250 PL 22:28:30 22:47:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

17 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#66 : 8acedb45-f780-41be-a82b-4967d56aa581 [db: observed]

Using prediction 8acedb45-f780-41be-a82b-4967d56aa581 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 = 518 x 43 km
a',b' = 258.8, 21.3 km
X0,Y0 = 736.6, 54.2 km
Mean diameter = 148 km

From 9 chords (VID,VIS,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.

Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 8acedb45-f780-41be-a82b-4967d56aa581 [observed]

 Occultation Date + Time   : 2003-07-17 at 22:41:35 UT +/- 0.05 min  [1]
 Object Designation        : (205) Martha
 Orbit Class               : MBA
 Star Designation          : GDR3 4205777459729509504
 Star Coordinates (ICRF)   : RA = 19 02 05.9776, DE = -06 18 38.883  [2]
 Star Magnitudes           : G = 11.44 mag, RP = 10.58 mag, BP = 12.21 mag
 Object Magnitude          : V = 13.48 mag
 Estimated Magnitude Drop  : 2.2 mag
 Estimated Max. Duration   : 7.2 sec
 Object Mean Diameter      : 81 km  (src: astorb)
 Speed of the shadow       : 11.2 km/s
 Elongation to Moon & Sun  : 64° (sunlit = 81%), Sun = 162°
 Cross-track uncertainty   : 4.0 mas = 5 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 0.72 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#66

 
 [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)