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2024-07-15 / UCAC4 505-089157 / (754) Malabar

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Javier De Elías O+ VID M203 ES GPS 22:22:45 22:24:31.1 22:24:38.3 22:27:05 1.0 0.3 7.20 95.0
2 show Oscar Canales, Fernando Campos O+ CCD M230 ES GPS 22:21:12 22:24:11.33 22:24:17.23 22:27:12 0.47 0.47 5.90 77.9
3 show Oscar Canales O+ CCD M280 ES GPS 22:21:14 22:24:10.29 22:24:17.03 22:27:14 0.31 0.31 6.74 89.0
4 show Peter Delincak O+ VID M400 SK NTP 22:20:47 22:22:04.80 22:22:11.30 22:24:10 0.14 0.14 6.50 85.8
5 show Petr Zeleny O+ VID M250 CZ GPS 22:20:00 22:22:08.6 22:22:15.9 22:24:33 0.4 0.4 7.30 96.4
6 show Leszek Benedyktowicz O+ VID M200 PL GPS 22:20:14 22:21:58.600 22:22:06.100 22:23:49 0.3 0.3 7.50 99.0
7 show Daniel Blazewicz O+ VID M350 PL GPS 22:20:36 22:21:55.59 22:22:02.49 22:23:42 0.10 0.10 6.90 91.1
8 show Marcin Filipek O+ VID M250 PL GPS 22:21:45 22:21:58.43 22:22:05.25 22:22:20 0.13 0.10 6.82 90.0
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

8 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#129 : 4187f7f0-c34e-11ef-5276-db846f3fff01 [db: observed]
JPL#127 : 5a734270-8630-11ef-78cd-403cbffafb1b [db: asteroids]

Using prediction 4187f7f0-c34e-11ef-5276-db846f3fff01 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 = 108 x 68 km
a',b' = 54.1, 33.8 km
X0,Y0 = 1412.9, 23.7 km
Mean diameter = 86 km

From 8 chords (CCD,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: 2024-07-15, 22:23 UT (JD = 2460507.433)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 57331.011.737 334°, -38° 2.457251e63256.40.0° 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

Occ by (754) Malabar on 2024-07-15

+−
↦km
Unavailable
300 km
CORA | LeaFlet| | OSM | Stamen

Event Details 
 Occultation UUID [and DB] : 4187f7f0-c34e-11ef-5276-db846f3fff01 [observed]

 Occultation Date + Time   : 2024-07-15 at 22:24:47 UT +/- 0.01 min  [1]
 Object Designation        : (754) Malabar
 Orbit Class               : MBA
 Star Designation          : GDR3 4504025039616552576
 Star Coordinates (ICRF)   : RA = 18 45 33.7535, DE = +10 58 46.209  [2]
 Star Magnitudes           : G = 14.65 mag, RP = 14.05 mag, BP = 15.06 mag
 Object Magnitude          : V = 14.23 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 6.6 sec
 Object Mean Diameter      : 87.6 km  (src: astorb)
 Speed of the shadow       : 13.2 km/s
 Elongation to Moon & Sun  : 65° (sunlit = 69%), Sun = 145°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#129

 
 [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
18 45 33.754 +10 58 46.21
FoV: 29.96'
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