Collaborative Occultation Resources and Archive (CORA)

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

2022-02-05 / 4UC 448-004188 / (893) Leopoldina

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show A. Leroy et al O+ CCD M500 FR NTP 19:58:01 19:58:48.55 19:58:50.84 20:00:01 0.10 0.10 2.29 46.3
2 show Gregor Krannich O+ CCD M350 DE GPS++ 19:58:01 19:59:19.04 19:59:21.63 20:00:31 0.27 0.27 2.59 52.3
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#69 : 560424df-5fd4-4c8b-9d2a-cccad8b677a5 [db: observed]

Using prediction 560424df-5fd4-4c8b-9d2a-cccad8b677a5 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:
Circular profile fit was not successful ...








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: 2022-02-05, 19:57 UT (JD = 2459616.331)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 58281.012.599 331°, -42° 2.457227e62389.30.0° None2020-10-05 not scaled 2019-10-23
# 58291.012.599 179°, -17° 2.457227e62389.30.0° 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] : 560424df-5fd4-4c8b-9d2a-cccad8b677a5 [observed]

 Occultation Date + Time   : 2022-02-05 at 19:55:07 UT +/- 0.01 min  [1]
 Object Designation        : (893) Leopoldina
 Orbit Class               : MBA
 Star Designation          : GDR3 3265594893645013120
 Star Coordinates (ICRF)   : RA = 03 12 22.1601, DE = -00 31 47.136  [2]
 Star Magnitudes           : G = 14.74 mag, RP = 14.1 mag, BP = 15.21 mag
 Object Magnitude          : V = 15.0 mag
 Estimated Magnitude Drop  : 0.9 mag
 Estimated Max. Duration   : 3.8 sec
 Object Mean Diameter      : 76 km  (src: astorb)
 Speed of the shadow       : 20.2 km/s
 Elongation to Moon & Sun  : 32° (sunlit = 24%), Sun = 89°
 Cross-track uncertainty   : 1.7 mas = 3 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#69

 
 [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)