David's Astronomy Pages
Images - Session 1294 (2025-01-13)

Objects Session Notes
Bullet 29P/Schwassmann-Wachmann - Comet
 
Bullet AT 2022rew - CV Type Transient  (non-detection)
Bullet AT 2022adbw - CV Type Transient  (non-detection)
Bullet AT 2023tsk - Type BL Transient
Bullet AT 2024aaxv - Type CV? Transient  (non-detection)
Bullet AT 2024aeey - Type Ia Supernova
Bullet AT 2025la - Transient
 
Bullet CGCG 250-013 - Galaxy with Type Ia Supernova 2023jf
Bullet LEDA 104161 - Galaxy with Transient AT 2022qvr
 
Bullet NGC 3521 - Spiral Galaxy with Type Ic Supernova 2024aecx
Bullet NGC 5332 - Elliptical Galaxy with Type II Supernova 2023jkq
Bullet NGC 5876 - Spiral Galaxy with Type Ia-SC Supernova 2024igg
 
Bullet DDO 142 - Spiral Galaxy with Type Ia-02cx Supernova 2023zgx
 
Bullet Variable Stars (photometric monitoring)
- T CrB, FU Ori
 
Bullet Nearby Stars (astrometric monitoring)
- None
 
- Attempted all-night session (12.5 hr) interrupted by 6.9 hr period of cloud. Temperature (6°C min) was quite a bit milder than the last 5 sessions (-1.5 to -6°C).
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 8.5°C falling later to 6°C (min)
- CCD Temperature:  -15°/-20°C
- Notes from 2025-01-13 >>
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Observing Result

Image

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29P/Schwassmann-Wachmann  - Comet

29P/Schwassmann-Wachmann - 2025-01-14
(passing through Leo)

Sun Distance 6.26 AU
Earth Distance 5.44 AU (814.2 million km)
   29P/Schwassmann-Wachmann - 2025-01-14 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -11.6 arcsec/hr, Dec 1.9 arcsec/hr)
Image    Image
Annotated CCD Image (50% size, square root scale)
9 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 03:12 UT (#1294045-53)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
   Annotated CCD Image (125% size, square root scale, cropped)
9 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 03:12 UT (#1294045-53)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
      
Images of Comet_29P_Schwassmann-Wachmann on Comets 2025 Page  >>     

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AT 2022rew  - CV Type Transient  (non-detection)

AT 2022rew (Cygnus)
AT 2022rew (Type: CV) discovered 2022-08-13.077 UT by Gaia
using Gaia Spacecraft Telescope
Alias: Gaia22djh
Discovery Magnitude 15.45 (G-Gaia Filter)
Gaia Alerting Magnitude 15.45
vs Historic Magnitude 17.84 +/- 0.85 SD
3 mag outburst in known CV V1081 Cyg
( TNS 2022rew | Gaia22djh )
 
AT 2022rew - 2025-01-13 (T+884.7d)
Image below (2025-01-13.788) was taken 884.7 days after discovery of 2022rew
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +15.2 (Clear Filter) Poor quality image (poor sky transparency, single frame)
Image
Annotated CCD Image (175% size, linear scale, cropped)
60s exposure (single frame), 3x3 binning, Clear Filter
2025-01-13 18:55 UT (#1294013)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2022rew on Transients 2022 Page  >>

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AT 2022adbw  - CV Type Transient  (non-detection)

AT 2022adbw (Crater)
AT 2022adbw (Type: CV) discovered 2022-12-17.262 UT by ATLAS
using ATLAS El Sauce Telescope
Alias: ATLAS22bnvt
Discovery Magnitude 16.58 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.77 (orange-ATLAS Filter)
( TNS 2022adbw )
 
AT 2022adbw - 2025-01-14 (T+758.9d)
Image below (2025-01-14.143) was taken 758.9 days after discovery of 2022adbw
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +16.7 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 03:35 UT (#1294057-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2022adbw on Transients 2022 Page  >>

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AT 2023tsk  - Type BL Transient

AT 2023tsk (Bootes)
AT 2023tsk (Type: BL) discovered 2023-09-25.828 UT by Gaia
using Gaia Spacecraft Telescope
Alias: Gaia23cqg
Discovery Magnitude 14.76 (G-Gaia Filter)
known BL Lac brightens by 2 mag in 45 months
Alerting Magnitude 14.76
vs Historic Magnitude 15.94 +/- 0.41 SD
Known BL Lac brightens by 2 mag in 45 months
( TNS 2023tsk | Gaia23cqg )
 
AT 2023tsk - 2025-01-14 (T+476.4d)
Image below (2025-01-14.201) was taken 476.4 days after discovery of 2023tsk
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +15.20 (Clear Filter)
Image
Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 04:58 UT (#1294088-92)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2023tsk on Transients 2023 Page  >>

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AT 2024aaxv  - Type CV? Transient  (non-detection)

AT 2024aaxv (Cygnus)
AT 2024aaxv (Type: CV?) discovered 2024-11-11.619 UT by XOSS
Alias: KATS24V018, TCP J20582280+3409401
Discovery Magnitude 16.94 (Clear Filter)
CV candidate classified by XOSS.
Details can be found at http://xjltp.china-vo.org/kats24v018.html
( TNS 2024aaxv )
 
AT 2024aaxv - 2025-01-13 (T+63.2d)
Image below (2025-01-13.776) was taken 63.2 days after discovery of 2024aaxv
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.0 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-13 18:44 UT (#1294007-10)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2024aaxv on Transients 2024 Page  >>

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AT 2024aeey  - Type Ia Supernova

SN 2024aeey (Draco)
SN 2024aeey (Type: Ia) discovered 2024-12-15.090 UT by Gaia
using Gaia Spacecraft Telescope
Alias: Gaia24dri, GOTO25fy, ATLAS25ake
Discovery Magnitude 15.56 (G-Gaia Filter)
Gaia Alerting Magnitude 15.56
Candidate SN near PanSTARRS galaxy
( TNS 2024aeey | Gaia24dri )
 
SN 2024aeey - 2025-01-14 (T+30.1d)
Image below (2025-01-14.231) was taken 30.1 days after discovery of 2024aeey
Position of earlier supernova (faint) is shown by white cross-hairs
Measured Magnitude +16.31 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 05:39 UT (#1294103-05)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2024aeey on Supernovae 2024 Page  >>

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AT 2025la  - Transient

AT 2025la (Cygnus)
AT 2025la (Type: unk) discovered 2025-01-11.109 UT by Gaia
using Gaia Spacecraft Telescope
Alias: Gaia25acy
Discovery Magnitude 16.29 (G-Gaia Filter)
Gaia Alerting Magnitude 16.29
Candidate SN near PanSTARRS galaxy
( TNS 2025la | Gaia25acy )
 
AT 2025la - 2025-01-13 (T+2.7d)
Image below (2025-01-13.812) was taken 2.7 days after discovery of 2025la
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +16.38 (Clear Filter)
Image
Annotated CCD Image (150% size, linear scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-13 19:32 UT (#1294029-30)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2025la on Transients 2025 Page  >>

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CGCG 250-013  - Galaxy with Type Ia Supernova 2023jf

CGCG 250-013 with SN 2023jf (Hercules)
SN 2023jf (Type: Ia) discovered 2023-01-09.456 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF23aaaepzi, ATLAS23arf, Gaia23auk
Discovery Magnitude 16.76 (g-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 19.91 (r-ZTF Filter)
Gaia Alerting Magnitude 17.09
Confirmed SN Ia
( TNS 2023jf | Gaia23auk )
 
CGCG 250-013 with SN 2023jf - 2025-01-14 (T+735.7d)
Image below (2025-01-14.185) was taken 735.7 days after discovery of 2023jf
Position of earlier supernova (not separately distinguishable, likely faded) is shown by white cross-hairs
Image
Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 04:36 UT (#1294079-83)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2023jf (in CGCG 250-013 on Supernovae 2023 Page  >>

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LEDA 104161  - Galaxy with Transient AT 2022qvr

LEDA 104161 with AT 2022qvr (Crater)
AT 2022qvr (Type: unk) discovered 2022-08-05.713 UT by ATLAS
using ATLAS Sutherland Telescope
Alias: ATLAS22zgo
Discovery Magnitude 16.38 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.30 (orange-ATLAS Filter)
( TNS 2022qvr )
 
LEDA 104161 with AT 2022qvr - 2025-01-14 (T+892.4d)
Image below (2025-01-14.112) was taken 892.4 days after discovery of 2022qvr
Position of earlier transient (non-distinct) is shown by white cross-hairs
LEDA 104161 is only faintly visible
Image
Annotated CCD Image (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 02:46 UT (#1294038-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2022qvr on Transients 2022 Page  >>

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NGC 3521  - Spiral Galaxy with Type Ic Supernova 2024aecx

NGC 3521 with SN 2024aecx (Leo)
SN 2024aecx (Type: Ic) discovered 2024-12-16.557 UT by ATLAS
using ATLAS Haleakala Telescope
Alias: ATLAS24rkq, PS24msg, ZTF24abyaspl
Discovery Magnitude 14.54 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.56 (orange-ATLAS Filter)
( TNS 2024aecx )
 
NGC 3521 with SN 2024aecx - 2025-01-14 (T+28.5d)
Image below (2025-01-14.102) was taken 28.5 days after discovery of 2024aecx
Position of earlier supernova (distinct) is shown by white cross-hairs
Estimated Magnitude +13.9 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 02:32 UT (#1294033-35)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2024aecx (in NGC 3521 on Supernovae 2024 Page  >>

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NGC 5332  - Elliptical Galaxy with Type II Supernova 2023jkq

NGC 5332 with SN 2023jkq (Bootes)
SN 2023jkq (Type: II) discovered 2023-05-25.351 UT by ATLAS
using ATLAS Haleakala Telescope
Alias: ATLAS23ljb
Discovery Magnitude 17.48 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.55 (orange-ATLAS Filter)
( TNS 2023jkq )
 
NGC 5332 with SN 2023jkq - 2025-01-14 (T+599.8d)
Image below (2025-01-14.172) was taken 599.8 days after discovery of 2023jkq
Position of earlier supernova (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 04:16 UT (#1294072-76)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2023jkq (in NGC 5332 on Supernovae 2023 Page  >>

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NGC 5876  - Spiral Galaxy with Type Ia-SC Supernova 2024igg

NGC 5876 with SN 2024igg (Bootes)
SN 2024igg (Type: Ia-SC) discovered 2024-05-07.304 UT by ALeRCE
using Palomar 1.2m Oschin Telescope
Alias: ZTF24aamlalc, ATLAS24hah, GOTO24bmp
Discovery Magnitude 17.76 (g-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 20.55 (r-ZTF Filter)
Early SN candidate (g-rise > 0.81+-0.01 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF24aamlalc
( TNS 2024igg )
 
NGC 5876 with SN 2024igg - 2025-01-14 (T+251.9d)
Image below (2025-01-14.215) was taken 251.9 days after discovery of 2024igg
Position of earlier supernova (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.5 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 05:19 UT (#1294096-100)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2024igg (in NGC 5876 on Supernovae 2024 Page  >>

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DDO 142  - Spiral Galaxy with Type Ia-02cx Supernova 2023zgx

DDO 142 with SN 2023zgx (Virgo)
SN 2023zgx (Type: Ia-02cx) discovered 2023-12-09.826 UT by Koichi Itagaki
Using 0.6-m F/5.7 Telescope + CCD (KAF-1001E)
Alias: ZTF23absjgta, Gaia23dqd
Discovery Magnitude 16.90 (Clear Filter)
Gaia Alerting Magnitude 17.41
Confirmed SN Iax[02cx-like]
( TNS 2023zgx | Gaia23dqd )
 
DDO 142 with SN 2023zgx - 2025-01-14 (T+401.3d)
Image below (2025-01-14.160) was taken 401.3 days after discovery of 2023zgx
Position of earlier supernova (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.6 (Clear Filter)
Poor quality image (bright uneven background)
Image
Annotated CCD Image (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-01-14 03:58 UT (#1294066-69)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2023zgx (in DDO 142 on Supernovae 2023 Page  >>

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