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[vsnet-obs 33181] Observations for April 9-10 / 10-11, 2001
- Date: Wed, 11 Apr 2001 03:08:47 -0300
- To: <vsnet-obs@kusastro.kyoto-u.ac.jp>, "variables-liada" <variables-liada@domeus.es>, =?Windows-1252?Q?Jaime_Garc=EDa_2?= <icoper@hotmail.com>
- From: "Sebastian Otero" <varsao@fullzero.com.ar>
- Subject: [vsnet-obs 33181] Observations for April 9-10 / 10-11, 2001
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
Two nights of observations.
I'm starting a visual follow up of epsilon Carinae, a small amplitud
variable, since I have observed it in a minimum.
Let's see what can be done with it. It's not the same as delta Sco and delta
Vel (their color make accuracy higher than 0.05 mag. easily achievable) but
it's worth the try.
Some sources classify it as an eclipsing binary with a possible 785 day
period.
However from Hipparcos data it resembles a pulsating giant with a range
1.81 - 1.91 (V) and a possible 150 - 155 day period.
I had never seen it fainter than that until this week's observations
(although I am not observing it regularly, but I stumbled upon it a lot of
times, you-already-know-why...)
And omega Canis Majoris is in its brightest outburst since I started my
observations in 1997. Ok... maybe "outburst" is not an appropriate word for
a less than 0.3 mag. brightening... But it is bright. (Currently my
estimates are 3.91).
And there seems to be a 20-day periodicity superimposed in the "normal"
cycle of L2 Puppis. Maxima at 2451940, 2451960, 2451980 and now it's stopped
rising exactly after 2452010... Time will tell.
S Carinae showed a faint maximum at 6.1 (JD 2452006).
And it's impossible not to speak about V Hya. I recently added it to my
plan. Last week I showed it to new observers in a star party but I think I
was more amazed than them by seeing such a red color in a star. I don't
think another star could be redder. It surpasses R Leporis easily. Yesterday
I spent several minutes just staring at it through my telescope.
The star is now at V 6.7, don't fool yourselves by its opaque apearance,
since it's very bright!!! A red light won't make your eyes close as a white
light but it doesn't mean it is not bright: THAT'S WHY WE USE IT FOR OUR
CHARTS!!!
These are the numbers:
APStheta 20010410.0 60 OSE
CARepsilon 20010410.009 1.96 OSE
CARepsilon 20010410.970 1.95 OSE
CAReta 20010410.029 54 OSE
CAReta 20010410.978 54 OSE
CARl 20010410.990 36 OSE
CARR 20010410.0 96 OSE
CARS 20010410.0 61 OSE
CARS 20010411.0 61 OSE Already fading
CARAG 20010410.089 73 OSE
CARBO 20010410.1 76 OSE
CARBZ 20010410.1 75 OSE
CARCK 20010410.1 73 OSE
CAREV 20010410.1 80: OSE
CARHR 20010410.031 71 OSE
CARIX 20010410.1 72 OSE
CARQZ 20010410.0826 63 OSE
CARV382 20010410.991 39 OSE
CARV430 20010410.089 67 OSE
CARV528 20010410.1 65 OSE
CENmu 20010410.09 34 OSE
CENomicron1 20010410.1 50 OSE
CENR 20010410.0 74 OSE
CENT 20010410.05 59 OSE
CENT 20010410.97 59 OSE
CENTV 20010410.042 78 OSE
CENUY 20010410.0 85 OSE
CENV369 20010410.0 82 OSE
CENV418 20010410.1 72 OSE
CENV744 20010410.0 57 OSE
CENV744 20010411.0 57 OSE
CENV766 20010410.060 64 OSE
CENV771 20010410.1 65 OSE
CENV798 20010410.0 78 OSE
CENV810 20010410.067 50 OSE
CENV854 20010410.0944 75 OSE
CENV913 20010410.1 65 OSE
CENV996 20010410.055 68: OSE
CMAkappa 20010410.972 37 OSE
CMAomega 20010410.016 39: OSE
CMAomega 20010410.972 39 OSE Bright
CMAT 20010410.0 93 OSE
CMAW 20010410.960 64 OSE
CMAVY 20010410.019 81 OSE
CMAKV 20010410.9597 72 OSE
CMIAI 20010409.9806 95: OSE Fading.
CNCX 20010410.0 61 OSE
CNCFZ 20010410.0 64 OSE
CPD-58 4492 20010410.0472 99 OSE
CRUAO 20010410.1 74 OSE
CRUBH 20010410.0 84 OSE
DORR 20010410.996 51 OSE Brighter
DORAR 20010410.999 70: OSE
GEMeta 20010410.9 33 OSE
HD095687 20010410.1 68 OSE
HD110717 20010410.981 74 OSE
HIP038226 20010410.012 67 OSE
HIP038226 20010410.977 67 OSE
HORR 20010410.9 60 OSE
HYAR 20010410.1 67: OSE Moon interferes
HYAU 20010410.0 50 OSE
HYAU 20010411.0 50 OSE
HYAV 20010410.0 68 OSE
HYAV 20010411.0 67 OSE
HYAY 20010411.0 65 OSE
LEOR 20010410.0 57 OSE
LEOR 20010411.0 58 OSE
LEPR 20010410.0 74 OSE
LEPS 20010411.0 72 OSE
LEPRX 20010410.96 57 OSE
LEPYY 20010410.96 58 OSE
MONU 20010410.962 56 OSE
MONV523 20010410.0 72 OSE
MUSR 20010410.0660 61 OSE
MUSR 20010410.9798 61 OSE Famous standstill
MUSS 20010410.0646 60 OSE
MUSS 20010410.983 61 OSE
MUSBO 20010410.026 60 OSE
MUSBO 20010410.986 60 OSE
NSV05477 20010410.0271 70 OSE
NSV06021 20010410.1 67 OSE
NSV06507 20010410.051 76 OSE
NSV19481 20010410.044 85 OSE
NSV20018 20010410.053 71 OSE
ORIalpha 20010410.9 07 OSE
ORIW 20010410.95 60: OSE
ORICK 20010410.94 62: OSE
ORIV1261 20010410.956 69 OSE
PUPL2 20010410.01 61: OSE
PUPL2 20010410.96 61 OSE
PUPV362 20010410.975 75 OSE
PUPV406 20010411.0 75 OSE
PUPV445 20010409.9771 100 OSE
SCOdelta 20010410.2118 1.84: OSE
SCOdelta 20010411.2431 1.84: OSE Moon very close!
TRAX 20010410.0 57 OSE
VELlambda 20010410.0 22 OSE
VELIX 20010410.0486 96 OSE
Best regards,
Sebastian.
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