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2020-01-04 / 4UC 541-023357 / (834) Burnhamia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Carles Schnabel O+ VID M400 ES GPS++ 23:47:56 23:49:56.86 23:50:00.70 23:51:59 0.48 0.48 3.84 61.8
2 show C. Perello/A. Selva O+ VID M500 ES GPS++ 23:47:58 23:49:56.04 23:49:59.24 23:51:56 0.08 0.08 3.20 51.5
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#132 : 6d60afd7-943a-4e0b-bdfd-adcc90973a5c [db: observed]

Using prediction 6d60afd7-943a-4e0b-bdfd-adcc90973a5c 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 = -130.7, 18.7 km
Circular diameter = 72 km

From 2 chords (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: 2020-01-04, 23:48 UT (JD = 2458853.492)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 30923.013.876 77°, 60° 2.453495e65358.50.0° None2019-06-25 67.0 +/- 7.0 km 2019-06-24
# 30933.013.876 256°, 69° 2.453495e65358.50.0° None2019-06-25 66.0 +/- 5.0 km 2019-06-24
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] : 6d60afd7-943a-4e0b-bdfd-adcc90973a5c [observed]

 Occultation Date + Time   : 2020-01-04 at 23:50:45 UT +/- 0.01 min  [1]
 Object Designation        : (834) Burnhamia
 Orbit Class               : MBA
 Star Designation          : GDR3 3373335763175303296
 Star Coordinates (ICRF)   : RA = 06 11 05.2453, DE = +18 05 42.717  [2]
 Star Magnitudes           : G = 14.54 mag, RP = 13.9 mag, BP = 14.96 mag
 Object Magnitude          : V = 14.98 mag
 Estimated Magnitude Drop  : 1.0 mag
 Estimated Max. Duration   : 4.1 sec
 Object Mean Diameter      : 67 km  (src: astorb)
 Speed of the shadow       : 16.1 km/s
 Elongation to Moon & Sun  : 59° (sunlit = 67%), Sun = 167°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.77 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#132

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
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