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Lista gwiazd obserwowanych przez obserwatora: Oskar Dereń
Liczba obserwowanych gwiazd: 245
Liczba wszystkich obserwacji: 24278
Data pierwszej obserwacji: 24-04-1989
Data ostatniej obserwacji: 08-11-2020
| Gwiazda | Liczba obs. | Data pierwszej obs. | Data ostatniej obs. | |
| AA CYG | 4 | 24-08-1990 | 05-11-1998 |
| AC CYG | 2 | 30-10-1999 | 03-11-1999 |
| AC HER | 1 | 29-10-2005 | 29-10-2005 |
| AF CYG | 819 | 24-05-1989 | 08-11-2020 |
| AG PEG | 71 | 13-08-1990 | 14-10-2017 |
| ALPHA CAS | 1 | 05-10-2018 | 05-10-2018 |
| ALPHA HER | 25 | 29-08-2005 | 10-10-2014 |
| ALPHA ORI | 208 | 05-10-1989 | 10-10-2020 |
| AR CEP | 27 | 06-02-1990 | 12-01-2000 |
| AT DRA | 20 | 12-11-1998 | 18-08-2005 |
| AZ DRA | 1 | 12-11-1998 | 12-11-1998 |
| BETA LYR | 40 | 09-07-2004 | 29-09-2016 |
| BETA PEG | 5 | 04-10-1999 | 29-10-1999 |
| BETA PER | 38 | 20-02-2004 | 13-01-2015 |
| BG CYG | 1 | 15-09-2003 | 15-09-2003 |
| BQ ORI | 1 | 11-03-2017 | 11-03-2017 |
| BU GEM | 126 | 27-11-1999 | 20-04-2020 |
| BU TAU | 96 | 12-10-1997 | 16-04-2003 |
| CE TAU | 113 | 06-02-1996 | 16-04-2000 |
| CG CYG | 1 | 06-08-2018 | 06-08-2018 |
| CH CYG | 528 | 15-05-1989 | 08-11-2020 |
| CHI AQR | 15 | 17-10-1990 | 17-10-2012 |
| CHI CYG | 343 | 22-10-1989 | 28-04-2020 |
| CK ORI | 108 | 04-10-1989 | 02-04-2005 |
| CP TAU | 4 | 22-02-2003 | 21-03-2003 |
| DELTA CEP | 295 | 06-02-1996 | 12-11-2015 |
| DELTA SCO | 8 | 05-07-2004 | 24-06-2015 |
| DK BOO | 3 | 03-06-1999 | 27-02-2000 |
| DM CEP | 2 | 11-10-1990 | 15-10-1990 |
| DR BOO | 5 | 03-06-1999 | 02-06-2000 |
| DY VUL | 8 | 15-10-1990 | 04-12-1990 |
| EG AND | 49 | 12-11-1998 | 31-10-2018 |
| EPS AUR | 23 | 27-09-2014 | 31-10-2018 |
| ETA AQL | 54 | 10-11-1997 | 22-08-2014 |
| ETA GEM | 481 | 04-10-1989 | 10-10-2020 |
| EU DEL | 380 | 10-08-1989 | 08-11-2020 |
| EZ PEG | 8 | 12-10-1990 | 13-11-1990 |
| FF AQL | 95 | 29-06-1997 | 06-01-2000 |
| FG BOO | 2 | 03-06-1999 | 17-07-1999 |
| FU ORI | 3 | 10-11-1997 | 08-03-2018 |
| FX ORI | 8 | 13-10-1990 | 23-02-2014 |
| G HER | 859 | 05-06-1989 | 08-11-2020 |
| GAMMA CAS | 31 | 02-09-1999 | 02-10-2015 |
| HS UMA | 2 | 03-06-1999 | 02-05-2000 |
| HU SGE | 2 | 24-09-1999 | 17-10-1999 |
| KM COM | 1 | 03-06-1999 | 03-06-1999 |
| MIU CEP | 249 | 11-10-1990 | 21-07-2015 |
| NSV 2918 | 11 | 01-01-1998 | 15-03-1998 |
| NSV 860 | 26 | 14-10-1990 | 05-12-1997 |
| OMI CET | 239 | 04-10-1989 | 08-02-2020 |
| P CYG | 312 | 09-10-1990 | 28-04-2020 |
| R AND | 73 | 16-07-1990 | 30-09-2018 |
| R AQL | 175 | 29-05-1989 | 05-11-2020 |
| R AQR | 27 | 21-10-1989 | 31-10-2005 |
| R ARI | 16 | 11-10-1990 | 04-03-2003 |
| R AUR | 65 | 03-08-1990 | 06-02-2013 |
| R BOO | 207 | 15-05-1989 | 07-08-2020 |
| R CAS | 185 | 03-12-1989 | 08-11-2020 |
| R CMI | 52 | 13-10-1990 | 18-04-2020 |
| R CNC | 35 | 03-10-1990 | 01-01-1998 |
| R CRB | 367 | 16-07-1989 | 07-08-2020 |
| R CVN | 5 | 19-05-2012 | 29-03-2014 |
| R CYG | 121 | 20-03-1990 | 07-10-2020 |
| R DRA | 143 | 18-03-1990 | 30-04-2017 |
| R GEM | 58 | 16-09-1990 | 15-04-2020 |
| R HYA | 1 | 17-01-1991 | 17-01-1991 |
| R LEO | 368 | 24-04-1989 | 10-10-2020 |
| R LEP | 6 | 20-12-1997 | 12-02-2016 |
| R LMI | 4 | 11-12-2006 | 22-04-2017 |
| R LYR | 148 | 09-10-1990 | 09-10-2014 |
| R PEG | 19 | 24-08-1990 | 04-01-2004 |
| R SCT | 520 | 10-06-1989 | 05-11-2020 |
| R SER | 280 | 01-05-1989 | 07-08-2020 |
| R SGE | 1 | 19-09-2003 | 19-09-2003 |
| R TRI | 223 | 26-10-1989 | 07-11-2019 |
| R UMA | 288 | 26-05-1989 | 05-11-2020 |
| R VIR | 82 | 08-12-1989 | 26-05-2020 |
| R VUL | 11 | 15-10-1990 | 22-11-2015 |
| RHO CAS | 14 | 28-11-1999 | 02-04-2005 |
| RHO PER | 72 | 02-09-1999 | 11-11-2018 |
| RR CRB | 76 | 28-06-1989 | 21-05-2014 |
| RS CNC | 236 | 27-11-1989 | 20-04-2020 |
| RS CRB | 5 | 24-09-1999 | 29-10-1999 |
| RS CYG | 203 | 10-08-1989 | 10-02-2019 |
| RS DEL | 1 | 30-10-1999 | 30-10-1999 |
| RS GEM | 2 | 31-03-2005 | 17-04-2012 |
| RS HER | 1 | 05-09-2004 | 05-09-2004 |
| RS UMA | 5 | 11-11-1991 | 24-06-2003 |
| RT AUR | 133 | 06-02-1996 | 18-04-2020 |
| RT CNC | 2 | 02-05-1999 | 21-04-2012 |
| RT CYG | 95 | 02-04-1990 | 01-01-2020 |
| RT PSC | 5 | 27-08-1990 | 19-08-1999 |
| RU CEP | 1 | 17-07-1999 | 17-07-1999 |
| RU CYG | 5 | 05-11-1998 | 19-08-1999 |
| RU HER | 2 | 02-08-2012 | 06-08-2012 |
| RU OPH | 4 | 03-08-1990 | 18-08-1990 |
| RV MON | 9 | 23-10-1990 | 27-01-1998 |
| RX AUR | 1 | 27-03-2016 | 27-03-2016 |
| RX BOO | 123 | 12-09-1990 | 22-08-2014 |
| RX CEP | 15 | 17-07-1999 | 12-01-2000 |
| RX LEP | 285 | 04-10-1989 | 24-01-2020 |
| RX PEG | 3 | 14-10-1990 | 22-10-1990 |
| RY DRA | 820 | 26-12-1989 | 05-11-2020 |
| RY HER | 17 | 03-08-1990 | 23-04-1991 |
| RY LEO | 5 | 16-04-2003 | 18-04-2020 |
| RY MON | 1 | 23-01-1999 | 23-01-1999 |
| RY UMA | 187 | 03-02-1990 | 08-03-2018 |
| S AQL | 7 | 01-08-1990 | 19-09-2003 |
| S BOO | 1 | 17-04-1992 | 17-04-1992 |
| S CEP | 17 | 30-08-1990 | 10-11-1990 |
| S CMI | 63 | 02-12-1989 | 06-04-2018 |
| S CNC | 1 | 26-03-2016 | 26-03-2016 |
| S CRB | 41 | 10-10-1990 | 18-08-2019 |
| S DEL | 2 | 19-10-1997 | 21-10-1997 |
| S HER | 41 | 23-06-1990 | 23-02-2019 |
| S PEG | 1 | 18-08-1990 | 18-08-1990 |
| S PER | 37 | 24-08-1990 | 05-03-2006 |
| S SCT | 7 | 23-07-2012 | 28-08-2013 |
| S UMA | 289 | 24-03-1990 | 31-03-2020 |
| S UMI | 7 | 22-10-1990 | 28-05-1991 |
| SS CEP | 324 | 16-09-1990 | 23-02-2014 |
| SS CYG | 17 | 19-01-1991 | 01-11-2014 |
| SS GEM | 24 | 13-10-1990 | 18-04-2020 |
| SS VIR | 9 | 12-05-2012 | 15-04-2020 |
| ST HER | 2 | 10-08-2003 | 25-08-2003 |
| ST UMA | 185 | 02-12-1989 | 08-03-2018 |
| SU CAS | 2 | 26-10-1999 | 29-10-1999 |
| SU CYG | 21 | 17-06-1997 | 10-12-1999 |
| SU TAU | 11 | 24-02-2003 | 07-04-2007 |
| SV CYG | 14 | 26-08-1990 | 01-12-2006 |
| SV VUL | 1 | 30-10-1999 | 30-10-1999 |
| SW GEM | 34 | 13-10-1990 | 18-04-2020 |
| SZ CYG | 2 | 01-11-2015 | 12-11-2015 |
| T AQR | 7 | 11-10-1990 | 02-11-1990 |
| T ARI | 4 | 24-08-1990 | 09-11-1991 |
| T CAS | 23 | 01-08-1990 | 06-02-2016 |
| T CEP | 639 | 24-05-1989 | 07-08-2020 |
| T CNC | 5 | 14-10-1990 | 26-03-2016 |
| T CRB | 22 | 29-05-1990 | 12-09-2018 |
| T GEM | 6 | 04-03-1992 | 17-04-2014 |
| T HER | 22 | 18-01-1991 | 13-09-2017 |
| T LYR | 9 | 15-09-2003 | 16-10-2017 |
| T PER | 62 | 24-08-1990 | 08-03-2018 |
| T TAU | 21 | 21-10-1997 | 23-02-2014 |
| T UMA | 111 | 28-06-1989 | 08-03-2018 |
| TAU4 SER | 30 | 10-08-2003 | 28-09-2012 |
| TT AQL | 4 | 08-10-1997 | 31-10-1998 |
| TT CYG | 7 | 24-08-2003 | 04-10-2003 |
| TU CAS | 9 | 28-11-1999 | 02-03-2000 |
| TU CVN | 655 | 08-12-1989 | 07-08-2020 |
| TU TAU | 5 | 27-08-1990 | 21-04-2012 |
| TV GEM | 18 | 17-10-1990 | 25-03-2020 |
| TV PSC | 4 | 25-10-2014 | 05-10-2018 |
| TW PEG | 6 | 11-10-1990 | 12-11-1998 |
| TX CVN | 3 | 29-11-1990 | 01-06-1991 |
| TX CYG | 1 | 01-11-2015 | 01-11-2015 |
| TX DRA | 16 | 29-06-1997 | 19-09-2003 |
| TX PSC | 145 | 15-10-1990 | 24-10-2018 |
| U CAM | 4 | 01-09-1990 | 21-01-1999 |
| U CAS | 17 | 11-10-1990 | 28-08-1994 |
| U CYG | 120 | 28-05-1989 | 13-10-2018 |
| U DEL | 536 | 16-07-1989 | 08-11-2020 |
| U GEM | 1 | 14-10-1990 | 14-10-1990 |
| U HER | 25 | 10-06-1996 | 25-08-2003 |
| U HYA | 21 | 06-04-1996 | 16-04-2014 |
| U LYR | 1 | 15-09-2003 | 15-09-2003 |
| U MON | 97 | 23-10-1990 | 08-03-2018 |
| U ORI | 213 | 15-10-1996 | 20-04-2020 |
| U PER | 9 | 27-01-1990 | 19-10-1999 |
| U SER | 3 | 14-04-1992 | 27-04-1992 |
| UU AUR | 587 | 19-10-1989 | 20-04-2020 |
| UV BOO | 125 | 12-09-1990 | 28-08-2003 |
| UW DRA | 1 | 24-09-1999 | 24-09-1999 |
| UX AND | 6 | 10-10-1990 | 06-08-1994 |
| UX DRA | 1 | 11-11-1998 | 11-11-1998 |
| V AQL | 22 | 15-10-1990 | 19-09-2007 |
| V AQR | 2 | 15-10-1990 | 17-10-1990 |
| V BOO | 63 | 23-06-1990 | 04-07-2015 |
| V CAS | 9 | 22-10-1990 | 06-02-2016 |
| V CMI | 8 | 01-11-1991 | 17-01-1998 |
| V CNC | 5 | 11-12-2006 | 15-01-2007 |
| V CRB | 4 | 17-01-1991 | 27-04-2000 |
| V CVN | 454 | 16-11-1990 | 07-08-2020 |
| V MON | 4 | 18-01-1991 | 16-03-1991 |
| V PEG | 10 | 14-08-1990 | 15-10-1990 |
| V VUL | 3 | 05-08-1994 | 22-11-2015 |
| V1339 CYG | 359 | 18-10-1999 | 22-09-2019 |
| V1974 CYG | 18 | 29-02-1992 | 30-05-1992 |
| V2048 OPH | 1 | 29-10-2005 | 29-10-2005 |
| V449 CYG | 15 | 12-10-1999 | 13-09-2007 |
| V466 CYG | 1 | 03-10-2014 | 03-10-2014 |
| V475 SCT | 5 | 01-09-2003 | 15-09-2003 |
| V568 CYG | 23 | 12-10-1999 | 28-10-2003 |
| V723 CAS | 1 | 30-03-1996 | 30-03-1996 |
| V939 HER | 1 | 17-07-1999 | 17-07-1999 |
| V973 CYG | 1 | 29-10-2005 | 29-10-2005 |
| VW DRA | 20 | 12-11-1998 | 29-10-2005 |
| VW UMA | 910 | 05-07-1989 | 05-11-2020 |
| VX CYG | 1 | 01-11-2015 | 01-11-2015 |
| VY UMA | 977 | 22-07-1989 | 05-11-2020 |
| VZ CAM | 2 | 02-05-1999 | 17-07-1999 |
| W AND | 24 | 01-12-1989 | 19-10-2012 |
| W BOO | 28 | 24-09-1999 | 16-08-2014 |
| W CAS | 12 | 04-08-1990 | 26-10-1990 |
| W CMA | 18 | 23-10-1990 | 08-03-1999 |
| W CRB | 1 | 22-08-2014 | 22-08-2014 |
| W CYG | 730 | 03-10-1989 | 08-11-2020 |
| W GEM | 2 | 27-03-2016 | 02-04-2016 |
| W HER | 4 | 25-08-2003 | 20-08-2004 |
| W LYR | 13 | 31-05-1996 | 16-10-2017 |
| W ORI | 217 | 15-10-1989 | 23-02-2019 |
| W PEG | 1 | 24-08-1990 | 24-08-1990 |
| W PER | 3 | 11-10-1990 | 16-10-1990 |
| W TRI | 99 | 27-01-1990 | 01-03-2014 |
| W VUL | 53 | 24-08-1990 | 22-11-2015 |
| WY GEM | 103 | 27-11-1999 | 18-04-2020 |
| WZ CAS | 2 | 24-09-1999 | 04-10-1999 |
| X CNC | 449 | 27-11-1989 | 20-04-2020 |
| X CYG | 31 | 12-11-1998 | 20-11-2016 |
| X GEM | 18 | 14-01-1991 | 10-11-1991 |
| X HER | 829 | 15-08-1989 | 08-11-2020 |
| X MON | 1 | 23-01-1999 | 23-01-1999 |
| X OPH | 365 | 11-06-1989 | 05-11-2020 |
| X PER | 92 | 23-01-2000 | 20-11-2016 |
| X SGE | 14 | 26-08-1990 | 31-10-1998 |
| XX CAM | 22 | 11-10-1990 | 12-01-2000 |
| Y CVN | 698 | 02-12-1989 | 07-08-2020 |
| Y LYN | 6 | 02-04-2005 | 12-04-2014 |
| Y PER | 16 | 27-12-1989 | 30-10-2000 |
| Y TAU | 205 | 13-10-1990 | 10-04-2020 |
| Y UMA | 1 | 23-01-1991 | 23-01-1991 |
| Z CNC | 2 | 17-04-2012 | 21-04-2012 |
| Z DEL | 8 | 02-08-1990 | 30-10-1999 |
| Z PEG | 2 | 24-08-1990 | 14-09-1997 |
| Z PSC | 116 | 24-08-1990 | 08-02-2014 |
| Z UMA | 690 | 03-10-1990 | 05-11-2020 |
| ZETA AUR | 1 | 31-03-2009 | 31-03-2009 |
| ZETA GEM | 137 | 09-03-1996 | 15-04-2020 |
| WY UMA | 1 | 31-12-2012 | 31-12-2012 |
| V339 DEL | 17 | 15-08-2013 | 29-09-2013 |
| SN 2014J | 1 | 04-02-2014 | 04-02-2014 |
| MZ CYG | 1 | 01-11-2015 | 01-11-2015 |
| UU CYG | 1 | 27-10-2014 | 27-10-2014 |
| RW GEM | 1 | 11-03-2017 | 11-03-2017 |
| V392 PER | 1 | 04-05-2018 | 04-05-2018 |
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