P/2010 H2 (VALES)
The comet is currently in extreme outburst.
(C) 2010-04-17 by Bernhard Haeusler, Maidbronn, Germany frozen on object and stars
21 min. exposure,
2010-04-17 UT 00:58, 12" SCT
f-5.65 + CCD ST10XME
12.5 mag, coma: 12", no tail:
North up, East on the left
The orbit is pointing the object to be a comet belonging to the Jupiter family. Orbit time around the Sun: 7.71 years
The following elements can be used in Astronomy programs like
TheSky or Guide.
The elements are asteroidal elements! Important parameters are
marked.
Here are the elements computed with Find_Orb, based on the last observations published on the NEO confirmation Page: (Auto solution)
Orbital elements:
04F0011
Perihelion 2010 Jul 8.845750 TT = 20:17:52 (JD 2455386.345750)
Epoch 2010 Apr 18.0 TT = JDT 2455304.5 Ju: 0.3333 Find_Orb
M 349.53812 (2000.0) P Q
n 0.12782424 Peri. 154.74931 -0.76820353 0.60054217
a 3.90295810 Node 63.98396 -0.62126398 -0.61562390
e 0.2150968 Incl. 14.29130 -0.15457810 -0.51025121
P 7.71 H 8.6 G 0.15 q 3.06344413 Q 4.74247208
From 220 observations 2010 Apr. 16-17; RMS error 0.274 arcseconds
# State vector (heliocentric ecliptic J2000):
# -2.801285999456 -1.191251068148 0.508177657314 AU
# 4.327796510441 -9.640659674120 -2.067908831165 mAU/day
# MOIDs: Me 2.6201 Ve 2.3425 Ea 2.0631 Ma 1.4969
# MOIDs: Ju 0.3333 Sa 4.4238 Ur 14.7266 Ne 25.0818
# Elements written: 17 Apr 2010 16:01:26 (JD 2455304.167662)
# Full range of obs: 2010 Apr. 16-17 (223 observations)
# Find_Orb ver: Mar 2 2010 18:03:42
# Perturbers: 00000000 (unperturbed orbit)
# Tisserand relative to Earth: 3.99550
# Tisserand relative to Jupiter: 2.97243
# Tisserand relative to Neptune: 8.38607
MPC observation: computed with Astrometrica
COD B82
OBS Bernhard Haeusler
TEL 0.30-m Schmidt-Cassegrain + CCD
NET CMC-14
04F0011 C2010 04 17.04426 13 38 38.39 +04 46 31.6 12.5 N B82
04F0011 C2010 04 17.04582 13 38 38.32 +04 46 31.6 12.5 N B82
04F0011 C2010 04 17.04740 13 38 38.25 +04 46 31.7 12.5 N B82
04F0011 C2010 04 17.04896 13 38 38.17 +04 46 31.8 12.5 N B82
04F0011 C2010 04 17.05087 13 38 38.08 +04 46 31.9 12.5 N B82
04F0011 C2010 04 17.05245 13 38 38.01 +04 46 31.9 12.5 N B82
Gauss curve produced by Astrometrica. The total PSF is using the
aperture circle of 10 x 10 pixel around the brightest pixel.
You see the Gauss curve right as the computed ideal line and the real pixels
contributed around the ideal line.
The Fit RMS is the deviation from the ideal line (inlay under the Gauss curve).
Photometry computed with FOCAS II, using the Multibox method:
COD B82
OBS Bernhard Haeusler
CATALOG: USNO A2.0 / CMC-14 - BAND: R
10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD
OBJECT DATE
TIME +/-
+/- +/-
+/- +/-
+/- N FWHM CAT
------------ ---------- --------
----- ----- ----- ----- ----- -----
---- ---- ---
04F0011 17/04/2010
01:09:32 12.47 12.25 12.22 12.21 12.20 12.19 73.0 18.4 B82
04F0011 17/04/2010
01:09:32* 0.00 0.02 0.02 0.02 0.02 0.02 6 5.5 CMC
FoCAs II - 07/01/2009-b
FOCAS II is a tool for photometry on the base of data coming from Astrometrica. Focas is basically using the .LOG file of Astrometrica.
Explanation of the FOCAS II table headings:
Object, date and time are self-explaining.
10x10, 20x20 ... 60x60 are the measured magnitudes according to the aperture
sizes of photometry in arc sec (rectancle).
SNR is the
Signal-to-noise ratio for aperture photometry (calculator).
SB is the magnitude of the faintest star on the image matching with the used
star catalogue. This is not the faintest star of the image!
COD is the MPC Code of the
observatory.
second line:
+/- are the precisions of the measurements.
N is the number of the used images for the measurements.
FWHM is the
Full-Width Half-Maximum of the total PSF: Measure of the seeing.
CAT is the used star catalog in Astrometrica.
Focas II is using the .log file of Astrometrica and is computing
the photometry under different apertures (10x10 ... 60x60).
The graphs are showing the astrometric precision of the images.
Focas II is using the .log file of Astrometrica and is computing
the photometry under different apertures (10x10 ... 60x60).
The graphs are showing the astrometric precision of the images.
links:
http://astrosurf.com/cometas-obs/index_i.htm Visual and CCD Observations and images from the "Cometas Obs" mailing list, using the Focas II format
es.groups.yahoo.com/group/Cometas_Obs The Spanish comet observation group in Yahoo