Month: December 2020

PNV J18040967-1803581

cepheids

We observed after the prompt notification from Patrick Schmeer as follows:
DATE-OBS= ‘2018-04-08T17:08:48
PNV J18040967-1803581: possible nova (11.2 mag) in Sagittarius
PNV J18040967-1803581 (N:)
RA 18h04m09.67s, DEC -18°03’58.1″ (J2000.0)
2018 April 8.7229 UT, 11.2 mag (CCD, unfiltered)
Independent discoverers: Tadashi Kojima (Gunma-ken, Japan) and Hideo Nishimura (Shizuoka-ken, Japan)
We observed transient at RA: 18:04:09.456, DEC: -18:03:55.68, V MAGNITUDE= 11.74 ±0.04, B MAGNITUDE= 13.63 ±0.04.
http://www.cbat.eps.harvard.edu/…/J18040967-1803581.html
https://www.aavso.org/vsx/index.php?view=detail.top…
http://mail.spaceobs.com/pipermail/iaude_spaceobs.com/2018-April/012612.html

Cepheids AStronomy Group, RBT, India.

Comet 38P/Stephan-Oterma

cepheids

38P/Stephan-Oterma, 2018-10-12T22:02:50.68 UT, Speed=1.53″/min, PA=70.7Deg, UCAC4, Mag=13.5 nucleus, +24:55:00N, 75:33:59E,
EXP: 420 secs,12.9µm/12.9µm, 19’X14′, ATIK-414exmono, R Bessell, 1.66″/pix, C11/f5.5/fl 1548.6mm/D280mm, OBJCRA 06 25 0.470, OBJCDEC= +14 10 46.28, CCDT= -4.9 DegC.
Astrometrica “ADES”, PRISMv10.
Cepheids Astronomy, RBT, INDIA.

M31n-2008-12a

cepheids

M31n-2008-12a, 2018-11-07T19:21:38.92
RA(2000)= 00h45m28.819s DEC(2000)= +41°54’10.05”
Site location: +24:55:00N, +75:33:59E
C11 SCT/f5.5/FL 1548.6mm/D280mm, OBJCRA 00 45 28.81, OBJCDEC= +41 54 09.9, CCDT= -9.6 DegC
Binnin: 2×2, 12.9µm/12.9µm, 19’X14′, ATIK-414ex,1.66″/pix
Catalog for astrometry/photometry: UCAC4,PRISMv10
V Bessell: Exposure: 90X20=1800 secs,MAGNITUDE= 18.91 ±0.27
R Bessell: Exposure: 90X20=1800 secs, MAGNITUDE= 19.06 ±0.37
Observers: A Raj (IIA, Bengaluru, India), V.K Agnihotri (Cepheids Astronomy, RBT, INDIA)
Atel Link: http://www.astronomerstelegram.org/?read=12189

C/2018V1(Machholz-Fujikawa-Iwamoto)

cepheids

Name : C/2018V1(Machholz-Fujikawa-Iwamoto)
Perihelion date : 2458456.0177 03-12-2018 12:25:29
Eccentricity : 1
Inclination (°): 143.9591
Node longitude (°): 128.729
Argument (°): 88.8273
perihelion distance (ua): 0.386714
Absolute Magnitude : 12
Activity Parameter : 4
Julian day : 2458434.44648462 -> 11-11-2018 22:42:56
RA (2000) : 12h41m23.532s DEC (2000) : -01°38’23.92”
Sun elongation (°) : 39.1
Geocentric distance (ua) : 1.036
Speed (arcsec/hour) :233.71
Angle (PA) : 84.991 °
Magnitude:10.4
RA speed : 232.9 arcsec/hour DEC : 20.4 arcsec/hour
# version=2017
# observatory
! mpcCode XXX
! name Cepheids Observatory, India
# submitter
! name V. Agnihotri
# observers
! name V. Agnihotri
# measurers
! name V. Agnihotri
# telescope
! design 0.28-m f/5.5 Schmidt-Cassegrain + CCD
! aperture 0.28
! fRatio 5.5
! detector CCD
# software
! astrometry Astrometrica 4.12.0.448
! photometry Astrometrica 4.12.0.448
permID |provID |trkSub |mode|stn |obsTime |ra |dec |rmsRA|rmsDec|astCat |mag |rmsMag|band|photCat |photAp|logSNR|seeing|exp |rmsFit|nStars|notes|remarks
|C/2018 V1 | | CCD|XXX |2018-11-12T00:01:01Z |190.442210 | -1.636303 |0.109|0.100 | UCAC4|12.85|0.086 | V| UCAC4| 7.7 |1.98 |4.1 | 60|0.11 | 15|K |

46P/Wirtanen

cepheids

46P/Wirtanen

Date=2018/11/28, 2146 IST
Phase: 46 °
Distance: 0.1308au
Solar distance: 1.0728au
Velocity: 37.0km/s
Hourly motion: 03’08.0″ PA:23° dRA:05.24s dDec:02’53.4″
Mean J2000: RA: 02h27m19.53s DE:-22°43’00.4″
Image center R.A.=02h:28m05s.28, DEC=-22°40’18.5″
Aperture:0.2m, FL=821mm + ASI1600
Start TimeStamp : 28-11-2018|21:46IST
End TimeStamp: 28-11-2018|22:08IST
Exposure: 50sec x 26 Luminence
Pixel scale:0.955 arcsec/pixel
Orientation:Up is 82.1 degrees E of N

Modeling :
Rotational Gradient (Delta: 1.4, Alpha: 92 deg)
Larson-Sekanina (Delta: 0.0, Alpha: 45 deg)

Cepheid Observatory, RBT, India
Vorion Scientific Observatory, AHD, India

TCP J15360165-1642561

cepheids

TCP J15360165-1642561, 2019-01-03T00:02:17.28
Astrometry: Catalog UCAC4, J2000
RA(2000)= 15h36m01.725s DEC(2000)= -16°42’58.66”

UT3.002 R MAGNITUDE= 14.27 ±0.22
UT3.004 I MAGNITUDE= 14.57 ±0.13
UT3.006 V MAGNITUDE= 14.13 ±0.10
telescope details: 0.28m Schmidt–Cassegrain+CCD
Filters Bessell BVRI
Imaged: K. Vora (Vorion Scientific Observatory, AHD, India)
Measured V. K. Agnihotri (Cepheid Observatory, RBT,India)

C/2018Y1(Iwamoto)

cepheids

Name : C/2018Y1(Iwamoto), 2019-02-24T16:30:45
C8/f5.9+CCD+Lband
Perihelion date : 2458521.5258 07-Feb-19 00:37:09
Eccentricity : 0.990037
Inclination (°): 160.4015
Node longitude (°): 147.4827
Argument (°): 358.053
perihelion distance (ua): 1.286948
Absolute Magnitude : 11.5
Activity Parameter : 4
Julian day : 2458539.24919919 -> 24-Feb-19 17:58:50
RA (2000) : 06h01m05.527s DEC (2000) : +35°09’44.27”
Sun elongation (°) : 114
Geocentric distance (ua) : 0.55045
Speed (arcsec/hour) :316.4
Angle (PA) : 271.45 °
Magnitude:13.4
RA speed : -386.9 arcsec/hour DEC : 7.9 arcsec/hour
Cepheid’s Observatory, RBT, India
Vorion Scientific Observatory, AHD, India