Recent

New minimum 2/23/2026

VV UMa

Fabio Di Stefano, Seestar S50, 2/22/2026

Seestar S50

. . .

New observation 2/23/2026

VV UMa

František Bílek, TS Observatory, 1/20/2026

Seestar S50

. . .

New observation 1/26/2026

VV UMa

Ivan Sergey, Polyani, 4/20/2025

200 mm Newton (SW), HEQ-5, Canon 400D, lens Tair-3 FS, lens Jupiter 21M (4/200),

200 mm Newton (SW), HEQ-5, Canon 400D, lens Tair-3 FS, lens Jupiter 21M (4/200),
Newton 5/1000

. . .

New observation 4/22/2025

VV UMa

Ivan Sergey, Polyani, 4/20/2025

200 mm Newton (SW), HEQ-5, Canon 400D, lens Tair-3 FS, lens Jupiter 21M (4/200),

200 mm Newton (SW), HEQ-5, Canon 400D, lens Tair-3 FS, lens Jupiter 21M (4/200),
Newton 5/1000

. . .

New observation 5/15/2024

SkyWatcher REF 102/500
#Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>VV UMa
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2460445.43436
Error (1 sigma): +0.00012/-0.00012 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00024/-0.00021 (Bootstrapping), +0.00007/-0.00005 (Prayer bead)
LSM: chi^2 = 1017.5, n_freedom = 166

. . .

New observation 5/14/2024

VV UMa

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

. . .

New observation 5/14/2024

VV UMa

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

SkyWatcher REF 102/500
#Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>VV UMa
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2460443.37259
Error (1 sigma): +0.00024/-0.00023 (Bootstrapping), +0.00014/-0.00014 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00046/-0.00046 (Bootstrapping), +0.00017/-0.00033 (Prayer bead)
LSM: chi^2 = 3167.6, n_freedom = 147

. . .

New observation 5/5/2024

VV UMa

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

SkyWatcher REF 102/500
#Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>VV UMa
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2460435.46967
Error (1 sigma): +0.00120/-0.00150 (Bootstrapping), +0.00055/-0.00101 (Prayer bead), +0.00026/-0.00026 (LSM)
Error (95% CI): +0.00251/-0.00315 (Bootstrapping), +0.00094/-0.00439 (Prayer bead)
LSM: chi^2 = 4693.4, n_freedom = 198
secondary minimum

. . .

New observation 5/1/2024

VV UMa

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

. . .

New observation 5/1/2024

VV UMa

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

. . .

New minimum 6/12/2021

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER ED 80/520 + MII G2-8300

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+R,exp.8 s. ,comp. HD83564,2x2.

----- EBFit result: -----
Tmin = 2459372.43731
Error (1 sigma): +0.00044/-0.00055 (Bootstrapping), +0.00021/-0.00025 (Prayer bead), +0.00028/-0.00028 (LSM)
Error (95% CI): +0.00094/-0.00106 (Bootstrapping), +0.00037/-0.00051 (Prayer bead)
LSM: chi^2 = 175.4, n_freedom = 59

. . .

New minimum 6/12/2021

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER ED 80/520 + MII G2-8300

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+V,exp.14 s. ,comp. HD83564,2x2.

----- EBFit result: -----
Tmin = 2459372.43734
Error (1 sigma): +0.00040/-0.00041 (Bootstrapping), +0.00019/-0.00028 (Prayer bead), +0.00030/-0.00030 (LSM)
Error (95% CI): +0.00078/-0.00085 (Bootstrapping), +0.00043/-0.00042 (Prayer bead)
LSM: chi^2 = 121.1, n_freedom = 60

. . .

New minimum 6/12/2021

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER ED 80/520 + MII G2-8300

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+B,exp.20 s. ,comp. HD83564,2x2.

----- EBFit result: -----
Tmin = 2459372.43755
Error (1 sigma): +0.00034/-0.00035 (Bootstrapping), +0.00015/-0.00019 (Prayer bead), +0.00018/-0.00018 (LSM)
Error (95% CI): +0.00066/-0.00073 (Bootstrapping), +0.00028/-0.00043 (Prayer bead)
LSM: chi^2 = 255.4, n_freedom = 59

. . .

New observation 6/11/2021

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER ED 80/520 + MII G2-8300

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+I,exp.10 s. ,comp. HD83564,2x2.

. . .

New observation 6/11/2021

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER ED 80/520 + MII G2-8300

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+R,exp.8 s. ,comp. HD83564,2x2.

. . .

New observation 6/11/2021

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER ED 80/520 + MII G2-8300

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+V,exp.14 s. ,comp. HD83564,2x2.

. . .

New observation 6/11/2021

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER ED 80/520 + MII G2-8300

SKY-WATCHER ED 80/520 + MII G2-8300
CCD+B,exp.20 s. ,comp. HD83564,2x2.

. . .

New minimum 4/14/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+I,exp.24 s,comp. HD83784,2x2.

----- EBFit result: -----
Tmin = 2458950.38605
Error (1 sigma): +0.00028/-0.00027 (Bootstrapping), +0.00007/-0.00006 (Prayer bead), +0.00020/-0.00020 (LSM)
Error (95% CI): +0.00055/-0.00052 (Bootstrapping), +0.00011/-0.00016 (Prayer bead)
LSM: chi^2 = 124.0, n_freedom = 64

. . .

New minimum 4/14/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+R,exp.16 s,comp. HD83784,2x2.

----- EBFit result: -----
Tmin = 2458950.38680
Error (1 sigma): +0.00018/-0.00019 (Bootstrapping), +0.00010/-0.00008 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00034/-0.00036 (Bootstrapping), +0.00016/-0.00019 (Prayer bead)
LSM: chi^2 = 99.0, n_freedom = 67

. . .

New minimum 4/14/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+V,exp.28 s,comp. HD83784,2x2.

----- EBFit result: -----
Tmin = 2458950.38666
Error (1 sigma): +0.00017/-0.00016 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00035/-0.00031 (Bootstrapping), +0.00007/-0.00009 (Prayer bead)
LSM: chi^2 = 88.2, n_freedom = 61

. . .

New minimum 4/14/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+B,exp.34 s,comp. HD83784,2x2.

----- EBFit result: -----
Tmin = 2458950.38671
Error (1 sigma): +0.00019/-0.00017 (Bootstrapping), +0.00004/-0.00005 (Prayer bead), +0.00009/-0.00009 (LSM)
Error (95% CI): +0.00036/-0.00037 (Bootstrapping), +0.00008/-0.00007 (Prayer bead)
LSM: chi^2 = 183.6, n_freedom = 56

. . .

New observation 4/12/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+R,exp.16 s,comp. HD83784,2x2.

. . .

New observation 4/11/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+B,exp.34 s,comp. HD83784,2x2.

. . .

New observation 4/9/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+I,exp.24 s,comp. HD83784,2x2.

. . .

New observation 4/8/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+R,exp.16 s,comp. HD83784,2x2.

. . .

New observation 4/8/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+V,exp.28 s,comp. HD83784,2x2.

. . .

New observation 4/8/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+B,exp.34 s,comp. HD83784,2x2.

. . .

New observation 4/8/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+I,exp.24 s,comp. HD83728,2x2.

. . .

New observation 4/8/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+R,exp.16 s,comp. HD83728,2x2.

. . .

New observation 4/8/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+V,exp.28 s,comp. HD83728,2x2.

. . .

New observation 4/8/2020

VV UMa

Urbaník M., Kysucká hvezdáreň

SKY-WATCHER REF 80/520 + MII G2-8300

SKY-WATCHER REF 80/520 + MII G2-8300
CCD+B,exp.34 s,comp. HD83728,2x2.

. . .

New minimum 3/17/2020

VV UMa

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + DSLR Canon 1000D

Skywatcher REF 102/600 + DSLR Canon 1000D
V2_C9_90.800_C_2x2

jasno, Měsíc, lehký opar

----- EBFit result: -----
Tmin = 2458530.40179
Error (1 sigma): +0.00012/-0.00009 (Bootstrapping), +0.00007/-0.00005 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00024/-0.00020 (Bootstrapping), +0.00011/-0.00012 (Prayer bead)
LSM: chi^2 = 337.9, n_freedom = 94

. . .

New observation 3/17/2020

VV UMa

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + DSLR Canon 1000D

Skywatcher REF 102/600 + DSLR Canon 1000D
V2_C9_90.800_C_2x2

jasno, Měsíc, lehký opar

. . .

New minimum 10/11/2019

VV UMa

Bragagnolo U., Gruppo Astrofili Salese S.M di Sala (Venezia ) ITALIA

Sky-Watcher REF 100/900 + QHY9

Sky-Watcher REF 100/900 + QHY9

----- EBFit result: -----
Tmin = 2458494.66262
Error (1 sigma): +0.00012/-0.00012 (Bootstrapping), +0.00016/-0.00019 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00023/-0.00025 (Bootstrapping), +0.00020/-0.00036 (Prayer bead)
LSM: chi^2 = 10631.9, n_freedom = 223

. . .

New minimum 4/12/2019

VV UMa

Pokorný P., Česká Lípa

Sonnar LNS 45/180 + Canon 600D

Sonnar LNS 45/180 + Canon 600D

----- EBFit result: -----
Tmin = 2458585.39530
Error (1 sigma): +0.00042/-0.00036 (Bootstrapping), +0.00023/-0.00022 (Prayer bead), +0.00043/-0.00043 (LSM)
Error (95% CI): +0.00079/-0.00076 (Bootstrapping), +0.00043/-0.00041 (Prayer bead)
LSM: chi^2 = 139.7, n_freedom = 114

. . .

New minimum 12/31/2017

VV UMa

M. Magris, Opicina, Trieste, IT

REF 120/600 + Orion 3G CCD + 0.5x reducer

REF 120/600 + Orion 3G CCD + 0.5x reducer
----- EBFit result: -----
Tmin = 2458118.67568
Error (1 sigma): +0.00028/-0.00028 (Bootstrapping), +0.00065/-0.00065 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00053/-0.00056 (Bootstrapping), +0.00188/-0.00112 (Prayer bead)
LSM: chi^2 = 476.5, n_freedom = 94

. . .

New minimum 3/3/2017

VV UMa

Bragagnolo U., Gruppo Astrofili Salese S.M di Sala (Venezia ) ITALIA

Sky-Watcher REF 100/900 + QHY9

Sky-Watcher REF 100/900 + QHY9

----- EBFit result: -----
Tmin = 2457773.61278
Error (1 sigma): +0.00006/-0.00006 (Bootstrapping), +0.00002/-0.00003 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00012/-0.00013 (Bootstrapping), +0.00004/-0.00005 (Prayer bead)
LSM: chi^2 = 1996.3, n_freedom = 199

. . .

New minimum 2/19/2017

VV UMa

Ladislav Červinka, Mladá Boleslav

R102/500 + Atik 314L+

R102/500 + Atik 314L+
----- EBFit result: -----
Tmin = 2457799.38991
Error (1 sigma): +0.00072/-0.00068 (Bootstrapping), +0.00056/-0.00035 (Prayer bead), +0.00024/-0.00024 (LSM)
Error (95% CI): +0.00144/-0.00142 (Bootstrapping), +0.00090/-0.00062 (Prayer bead)
LSM: chi^2 = 1765.2, n_freedom = 267

. . .

New observation 4/18/2012

VV UMa

Marek Chrastina, Brno, HaP

Newton 400/1760 + SBIG ST-7 + BVRI

. . .

New observation 4/18/2012

VV UMa

Marek Chrastina, Brno, HaP

Newton 400/1760 + SBIG ST-7 + BVRI

. . .

New observation 4/18/2012

VV UMa

Marek Chrastina, Brno, HaP

Newton 400/1760 + SBIG ST-7 + BVRI

. . .

New observation 2/8/2011

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 1600

Celestron 280/1765 + CCD G2 1600
předpověď sekundárního minima JDg=2455600.4656 - 23h10m UT (podle Mo=45006.631 per.=0.687376 dne) - minimum nastalo o 22 minut později

. . .

New observation 2/8/2011

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 1600

Celestron 280/1765 + CCD G2 1600
předpověď sekundárního minima JDg=2455600.4656 - 23h10m UT (podle Mo=45006.631 per.=0.687376 dne) - minimum nastalo o 22 minut později

. . .

New observation 2/8/2011

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 1600

Celestron 280/1765 + CCD G2 1600
předpověď sekundárního minima JDg=2455600.4656 - 23h10m UT (podle Mo=45006.631 per.=0.687376 dne) - minimum nastalo o 22 minut později

. . .

New minimum 2/8/2011

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 1600

. . .

New minimum 2/8/2011

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 1600

. . .

New observation 4/26/2010

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg=2455311.4282 - 22h16m UT (podle Mo=52674.648 per.=0.6873702 dne) - minimu nastalo o 22 minut později

. . .

New observation 4/26/2010

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg=2455311.4282 - 22h16m UT (podle Mo=52674.648 per.=0.6873702 dne) - minimu nastalo o 22 minut později

. . .

New minimum 4/26/2010

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

. . .

New minimum 4/26/2010

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

. . .

New observation 4/14/2009

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď prim. minima JDg=2454935.4077 - 21h47m UT (podle Mo=52674.648 per.=0,6873702), minimum nastalo o 54 min. později

. . .

New observation 4/14/2009

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď prim. minima JDg=2454935.4077 - 21h47m UT (podle Mo=52674.648 per.=0,6873702), minimum nastalo o 54 min. později

. . .

New observation 4/14/2009

VV UMa

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď prim. minima JDg=2454935.4077 - 21h47m UT (podle Mo=52674.648 per.=0,6873702), minimum nastalo o 54 min. později

. . .

New minimum 4/14/2009