Comet C/2017 E4 (Lovejoy)

IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxxf InT APERTURcamchip SFW C ## u.uu xx.x PIXELSIZE
   2017E4  2017 04 25.05  B[ 9.9 GB 10.0B    40                     ICQ XX WAR01                                                  Johan Warell, Lindby Observatory (K60), Skurup, Sweden ; NELM: 6.6, Negative observation, mag estimated from 9.9V star defocussed to a few arcmin in size. Comp star 11.5V seen steadily, 11.8V seen often. Low altitude, 9 degress over NE horizon. Faint dawn. Clear at come, 3/8 Cirrus, transparent sky, +1C, calm, dew.
2017E4 2017 04 24.15 B 9.4 TK 20.0T10 50 3 2 6.0 ICQ XX LAB02 Carlos Labordena, La Serra
2017E4 2017 04 23.48 S[ 8.5 TK 12.5B 30 ICQ xx HER02 Carl Hergenrother
2017E4 2017 04 21.16 S 9.2 TK 20.3T10 100 3 2/ 0.2 320 ICQ XX GON05 Juan Jose Gonzalez Suarez
2017E4 2017 04 21.10 S 9.8 TK 10.0R 5 50 2 4 ICQXXX HAS02 Werner Hasubick
2017E4 2017 04 21.06 M 9.9 TT 32.6L 5 67 & 2 2/ 0.08 320 ICQ XX GUZ Piotr Guzik
2017E4 2017 04 19.04 S 9.5 GB 10.0B 40 3 4 ICQ XX WAR01 Johan Warell, Lindby Observatory (K60), Skurup, Sweden ; NELM: 6.6, Reference stars: HD 3756 (8.9V), SAO 54078 (9.7V), TYC 2287-0634-1 (10.7V), Faint, round, poorly condensed coma with somewhat brighter center. Low altitude 10 degrees over NE horizon, 5 degrees south of M31 just before moonrise. Fainter and more diffuse than expected. Clear sky, good transparency, calm, -2C, frost.
2017E4 2017 04 17.48 C 10.0 TK 10.6R 5a120 2 0.16 317 LEHaa Thomas Lehmann
2017E4 2017 04 13.81 xM 7.4 HV 11.0M 9 31 5 5 ICQ XX AIKaa Reijin Aikawa, ,; GUIDE 9.1 software used for comp. star mags.
2017E4 2017 04 11.80 xB 7.2 HV 20.3T10 36 6 6 ICQ XX AIKaa Reijin Aikawa, ,; GUIDE 9.1 software used for comp. star mags.
2017E4 2017 04 10.12 C 7.5 TK 7.1A 3A339 12 0.8 301 LEHaa Thomas Lehmann
2017E4 2017 04 10.11 S 6.7 TI 25.2L 63 3 6 7.0m290 ICQ XX HAR11 Christian Harder, Jeersdorf, Germany ; bright Moonlight
2017E4 2017 04 10.10 M 6.9 TK 10.5L 4 19 4 VOL Wolfgang Vollmann
2017E4 2017 04 10.10 M 7.1 TK 10.0B 25 4 6/ ICQ XX CER01 Jakub Cerny
2017E4 2017 04 09.49 S 6.3 AC 5.0B 7 4/ ICQ XX AGUaa Salvador Aguirre, Son, Mex.; City . Comp. Stars= 70/60
2017E4 2017 04 09.13 S 6.3 HI 13.0L 5 25 5 6 ICQ XX BUIaa Gideon van Buitenen, Dordrecht, NL
2017E4 2017 04 09.10 M 6.3 TT 5.0B 10 5 5 ICQ XX GUZ Piotr Guzik
2017E4 2017 04 08.49 S 6.2 AC 5.0B 7 & 8 4/ ICQ XX AGUaa Salvador Aguirre, Sonora, Mex.; City. Comp. Stars= 60/70
2017E4 2017 04 08.15 E 6.4 TI 12.6B 5 25 3 7 10.0m 15 DECaa DECaa Michel Deconinck, Artignosc-sur-Verdon; SQM-L: 20.2 mag/arcsec^2, Reference stars: TYC 2229-1549-1, The moon very low was not an issue
2017E4 2017 04 07.50 S 6.3 AC 5.0B 7 & 7.6 3/ ICQ XX AGUaa Salvador Aguirre, Son, Mex.; City. Comp. Stars= 60/74
2017E4 2017 04 07.48 C 7.2 TK 10.6R 5a 60 14 1.4 295 LEHaa Thomas Lehmann
2017E4 2017 04 07.17 S 7.0 TK 8.0B 11 6 7 ICQ XX LAB02 Carlos Labordena, Culla
2017E4 2017 04 07.17 M 7.1 TK 5.0B 10 5 7 ICQ XX GON05 Juan Jose Gonzalez Suarez
2017E4 2017 04 07.12 S 5.6:TK 25.4T10 96 4.4 6 ICQ XX COLac Mike Collins, Everton; SQM: 19.3 mag/arcsec^2, Reference stars: TYC 2225-1225, TYC 2221-0396, Altitude 13 deg, no nearby comparison stars
2017E4 2017 04 06.50 M 6.3 TK 5.0B 10 5 6 ICQ xx HER02 Carl Hergenrother
2017E4 2017 04 06.12 S 6.4 TI 7.0B 15 8 6 ICQ XX HAR11 Christian Harder, Jeersdorf, Germany
2017E4 2017 04 06.08 S 6.9 GB 8.0B 11 4 7/ ICQ XX WAR01 Johan Warell, Lindby Observatory (K60), Skurup, Sweden ; NELM: 6.5, Reference stars: HD 212395 (6.2V), HD 214350 (7.1V), Small, well condensed, round coma with much brighter center. Altitude 13 degrees over NE horison, comparison stars at same altitude. Gibbous Moon setting in W. Clear, transaparent sky, steady breeze, +4 C.
2017E4 2017 04 06.06 B 6.5 TK 5.0B 7 4 7 ICQ XX KAR02 Timo Karhula, Virsbo, Sweden; Also seen in 8x20B. Altitude 12 deg. 74% gibbous Moon.
2017E4 2017 04 05.81 xB 6.8 HV 20.3T10 36 4 6/ ICQ XX AIKaa Reijin Aikawa, ,; GUIDE 9.1 software used for comp. star mags.
2017E4 2017 04 05.79 xM 7.4 TK 5.0B 7 8.4 6 ICQ XX WYA Christopher Wyatt
2017E4 2017 04 05.36 M 6.5 TK 10.0B 20 5 5 ICQ XX GOI Marco Goiato
2017E4 2017 04 04.80 aS 6.4 HV 5.0B 7 8 4 ICQ XX MIY01 Osamu Miyazaki, ,; GUIDE 9.0 software used for comp. star mags.
2017E4 2017 04 04.36 M 6.3 TK 10.0B 20 6 5 ICQ XX GOI Marco Goiato
2017E4 2017 04 04.16 M 6.9 TK 5.0B 10 4 7 ICQ XX GON05 Juan Jose Gonzalez Suarez
2017E4 2017 04 04.14 S 6.5 TK 8.0B 15 & 6 7 ICQ XX SCH04 Alex Scholten, Eerbeek; NELM: 6.0, Reference stars: TYC 1689-01986, TYC 1680-00609, TYC 1685-00931, comparision starts at same altitude as comet
2017E4 2017 04 04.01 M 6.5 TK 11.4L 5 16 4 7 ICQ XX NOV01 Artyom Novichonok
2017E4 2017 04 03.80 S 6.7 TT 4.0B 8 3 6 ICQ XX MAT08 Michael Mattiazzo, Swan Hill, Victoria, Australia; low altitude
2017E4 2017 04 03.78 M 6.7 TK 7.0B 15 5 7 ICQ XX LOV Terry Lovejoy, Birkdale
2017E4 2017 04 03.34 M 6.5 TK 7.0B 15 5 7 ICQ XX SOU01 Willian Souza
2017E4 2017 04 03.10 S 6.5 TI 4.4B 8 7 5 ICQ XX HAR11 Christian Harder, Jeersdorf, Germany
2017E4 2017 04 03.09 S 6.3 TI 25.2L 5 63 5.5 5 ICQ XX HAR11 Christian Harder, Jeersdorf, Germany ; NELM: 4.8, Swanfilter sprach gut an.
2017E4 2017 04 02.81 aM 6.7 TK 4.2B 8 5 6/ ICQ XX YOS02 Katsumi Yoshimoto, ,; GUIDE 9.0 software used for comp. star mags.
2017E4 2017 04 02.78 M 6.3 TK 7.0B 15 5 7 ICQ XX LOV Terry Lovejoy, Birkdale; Not expecting to see anything I was stunned to immediately see a small bright highly condensed object clearly in 15x70 Binoculars
2017E4 2017 04 02.25 C 7.1 MC 50.0L 3a 50 6.7 ICQ XX HILaaI C 0.19mFL9 K32 AFo 5 P5 0.0 1.0s 1.0 Kevin Hills; Multibox data generated using Astrometrica and FoCas, then Iris used to estimate visual equivalent magnitude as reported above
2017E4 2017 04 02.18 S 8.5 TK 8.0B 11 8 6 ICQ XX LAB02 Carlos Labordena, La Serra
2017E4 2017 04 02.17 S 8.3 TK 8.0B 11 7 5 ICQ XX LAB02 Carlos Labordena, La Serra
2017E4 2017 04 02.12 M 7.0 TK 10.5L 4 19 5 VOL Wolfgang Vollmann
2017E4 2017 04 02.11 B 6.5 U4 20.0L 4a450 6 S7 24.0m280 ICQ XX NAGaa S dCDS CFC 5 U9 d Akos Nagy Melykuti, Szalánta
2017E4 2017 04 02.10 M 6.6 TT 5.0B 10 5 6 0.15 270 ICQ XX GUZ Piotr Guzik
2017E4 2017 04 02.10 aM 7.1 TK 10.0B 25 5.4 6 ICQ XX CER01 Jakub Cerny
2017E4 2017 04 02.09 aM 6.8 HJ 8.0B 20 5.5 5/ ICQ XX BIEaa Marek Biely, Czech Republic, Brno; Nice, well condensed object with an elongated coma. Low altitude: 11.9 deg. above the horizon. Corrected for an atmospheric extinction by using "average" table.
2017E4 2017 04 01.86 B 7.0 TK 20.0L 4 45 5.5 6 ICQ XX PEA Andrew Pearce, Nedlands
2017E4 2017 04 01.86 B 7.1 TK 10.0L 4 20 7 6 ICQ XX PEA Andrew Pearce, Nedlands
2017E4 2017 04 01.81 aM 7.3 TK 10.0B 26 6 6 ICQ XX YOS02 Katsumi Yoshimoto, ,; GUIDE 9.0 software used for comp. star mags.
2017E4 2017 04 01.78 S 7.0 TT 10.0B 25 3 6 ICQ XX MAT08 Michael Mattiazzo, Swan Hill, Victoria, Australia
2017E4 2017 04 01.76 xM 7.3 TK 5.0B 7 8.3 6 ICQ XX WYA Christopher Wyatt
2017E4 2017 04 01.39 k 8.4 AQ 30.0T 6a 60 3 ICQ XX MAS01I C 3 mG2x K6M KPR 5 U1* 0.1 0.9s 0.9 Martin Masek
2017E4 2017 04 01.17 M 7.4 TK 5.0B 10 5 7 ICQ XX GON05 Juan Jose Gonzalez Suarez
2017E4 2017 04 01.10 M 7.6 TK 10.0B 25 4.4 7 ICQ XX CER01 Jakub Cerny
2017E4 2017 04 01.09 M 7.0 TT 32.6L 5 67 5 6 0.5 270 ICQ XX GUZ Piotr Guzik
2017E4 2017 04 01.09 B 6.5 U4 20.0L 4a450 4 S7 20.0m 26 ICQ XX NAGaa S dCDS CFC 5 U9 d Akos Nagy Melykuti, Szalánta
2017E4 2017 04 01.08 M 7.0 TT 5.0B 10 5 6 ICQ XX GUZ Piotr Guzik
2017E4 2017 04 01.03 M 7.5 TK 11.4L 5 16 4.7 6 ICQ XX NOV01 Artyom Novichonok
2017E4 2017 03 31.87 B 7.4 TK 20.0L 4 45 5.5 6 ICQ XX PEA Andrew Pearce, Nedlands
2017E4 2017 03 31.87 B 7.4 TK 10.0L 4 20 6.5 6 ICQ XX PEA Andrew Pearce, Nedlands
2017E4 2017 03 31.79 M 7.3 TK 7.0B 15 5 6 ICQ XX LOV Terry Lovejoy, Birkdale
2017E4 2017 03 31.14 B 8.0 TK 10.0R 5 20 3.1 4 ICQXXX HAS02 Werner Hasubick
2017E4 2017 03 31.13 S 7.3 TK 7.0B 6 16 8 6 0.25 PIL01 Uwe Pilz
2017E4 2017 03 30.77 S 7.3 TT 10.0B 25 3 6 ICQ XX MAT08 Michael Mattiazzo, Swan Hill, Victoria, Australia
2017E4 2017 03 30.50 M 7.0 TK 5.0B 10 6 6 ICQ xx HER02 Carl Hergenrother
2017E4 2017 03 30.34 M 7.1 TK 5.0B 7 8 6 ICQ XX GOI Marco Goiato
2017E4 2017 03 30.34 M 7.2 TK 10.0B 20 6 6/ 0.2 270 ICQ XX GOI Marco Goiato
2017E4 2017 03 30.11 B 5.5 U4 20.0L 4a450 3 s5 25.0m260 ICQ XX NAGaa S dCDS CFC 5 U9 d Akos Nagy Melykuti, Szalánta
2017E4 2017 03 30.03 M 7.6 TK 11.4L 5 16 4.4 6 ICQ XX NOV01 Artyom Novichonok
2017E4 2017 03 29.78 S 7.6 TT 10.0B 25 3 6 ICQ XX MAT08 Michael Mattiazzo, Swan Hill, Victoria, Australia; sharp increase in DC
2017E4 2017 03 29.34 M 7.3 TK 10.0B 20 6 7 0.2 280 ICQ XX GOI Marco Goiato
2017E4 2017 03 29.34 M 7.2 TK 5.0B 7 8 7 ICQ XX GOI Marco Goiato
2017E4 2017 03 29.18 S 8.6 TK 8.0B 11 5 5 ICQ XX LAB02 Carlos Labordena, La Serra
2017E4 2017 03 29.05 M 7.3 TK 20.0L 5 31 5 6/ ICQ XX NOV01 Artyom Novichonok
2017E4 2017 03 28.80 xB 7.0 HV 20.3T10 36 5 5 ICQ XX AIKaa Reijin Aikawa, ,; GUIDE 9.1 software used for comp. star mags.
2017E4 2017 03 28.18 S 9.1 TK 20.0T10 50 2.5 6 ICQ XX LAB02 Carlos Labordena, La Serra
2017E4 2017 03 28.18 M 7.9 TK 5.0B 10 5 6/ ICQ XX GON05 Juan Jose Gonzalez Suarez
2017E4 2017 03 28.17 M 8.1 TK 20.3T10 77 5 6 ICQ XX GON05 Juan Jose Gonzalez Suarez
2017E4 2017 03 28.15 B 8.2 TK 44.0L 5 100 2.1 4 ICQXXX HAS02 Werner Hasubick
2017E4 2017 03 28.10 B 6.0 U4 20.0L 4a450 2.66S6 21.0m265 ICQ XX NAGaa S dCDS CFC 5 U9 d Akos Nagy Melykuti, Szalánta
2017E4 2017 03 27.77 S 8.6 TT 10.0B 25 3 4 ICQ XX MAT08 Michael Mattiazzo, Swan Hill, Victoria, Australia
2017E4 2017 03 27.77 S 8.5 TK 8.0B 20 4 3 ICQ XX CAM03 Paul Camilleri
2017E4 2017 03 27.73 xM 9.1 TK 25.0L 5 39 2.4 6 ICQ XX WYA Christopher Wyatt
2017E4 2017 03 27.48 C 8.7 TK 10.6R 5a300 6.3 ICQ XX RAMaa C sSTL KA1 A32 5 U3 3.5s 3.5 Raymond Ramlow
2017E4 2017 03 27.11 S 10.5 U4 60.0L 188 1.8 3 ICQ XX SZA Sandor Szabo, Csapod
2017E4 2017 03 26.76 S 8.6 TK 40.6L 4 76 4 4 ICQ XX CAM03 Paul Camilleri
2017E4 2017 03 26.50 S 8.6 TK 12.5B 30 3 5 ICQ xx HER02 Carl Hergenrother
2017E4 2017 03 25.77 S 9.0 TT 10.0B 25 3.5 4 ICQ XX MAT08 Michael Mattiazzo, Swan Hill, Victoria, Australia; brightening rapidly
2017E4 2017 03 25.48 C 9.4 TK 10.6R 5a300 > 6.5 ICQ XX RAMaa C sSTL KA1 5 U3 3.5s 3.5 Raymond Ramlow
2017E4 2017 03 25.34 S 9.3 TK 18.0L 8 57 3 4 ICQ XX AMO01 Alexandre Amorim
2017E4 2017 03 24.85 B 9.3 TK 20.0L 4 45 4 4 ICQ XX PEA Andrew Pearce, Nedlands
2017E4 2017 03 24.85 B 9.2 TK 10.0L 4 20 5.5 4 ICQ XX PEA Andrew Pearce, Nedlands
2017E4 2017 03 24.78 C 9.6 TK 40.6L 3a120 5.3 ICQ XX RAMaa C s 5 U3 1.1s 1.1 Raymond Ramlow
2017E4 2017 03 20.21 S 8.6 TK 20.3T10 100 4.5 3 ICQ XX GON05 Juan Jose Gonzalez Suarez
2017E4 2017 03 16.75 C 12.4:TK 70.0L 7a120 1.8 ICQ XX RAMaa C sFL9 KA9 A32 5 U3 0.2 0.5s 0.5 Raymond Ramlow; bright moonlight (70% illuminated)