Astronomy Calendar of Celestial Events 2013

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Astronomy Calendar 2013

The Astronomy calendar includes data for some general celestial events during 2013. In all reports, time and date are in universal time (UT) calculated for Sofia, Bulgaria. More reports generated by Astronomy Lab 2 for Windows, marked on the page as astron.lab. Time is in 24 hour format.

 

 

Abbreviations used in reports:

AU                        – Astronomical Units (150 000 000 km)

DEC                     – Declination

DIST                     – Distance

DSO                      – December Solstice

E                          – East

FM                        – Full Moon

FQ                         – First Quarter Moon

ILL FR,

ILLUM FRAC       – Illuminated Fraction

JSO                       – June Solstice

LQ                        – Last Quarter Moon

MEQ                     – March Equinox

MR                       – Moon Rise

MS                        – Moon Set

N                          – North

NM                       – New Moon

S                           – South

SEQ                      – September Equinox

SR                         – Sunrise

SS                         – Sunset

UT                        – Universal Time

W                          – West

ZHR                     – Zenithal Hourly Rate

 

 

Sofia, BULGARIA

Latitude: 42o41'05" N

Longitude: 23o19'10" E

Elevation: 565 meters

 

Seasons report for 2013 (astron.lab)

 

 

data
hour
Length
March Equinox
20 Mar 2013
10:59
Winter Length    88,99 days
June Solstice
21 June 2013
04:59
Spring Length    92,75 days
September Equinox
23 Sep 2013
20:38
Summer Length    93,65 days
December Solstice
22 Dec 2013
17:07
Autumn Length    89,85 days

 

 

Dates of Easter (2013 – 2022)

 

Year
Orthodox
Catholic
2013
05 May
31 Mar
2014
20 Apr
20 Apr
2015
12 Apr
05 Apr
2016
01 May
27 Mar
2017
16 Apr
16 Apr
2018
08 Apr
01 Apr
2019
28 Apr
21 Apr
2020
19 Apr
12 Apr
2021
02 May
04 Apr
2022
24 Apr
17 Apr

 

European Summer Time

European Summer Time is the arrangement in Europe by which clocks are advanced by one hour in Spring to make the most of seasonal daylight. This is done in all of the countries of Europe except Iceland and Russia which observes Greenwich Mean Time (GMT) all year round. In the European Union this period extends from 01:00 GMT on the last Sunday in March until 01:00 GMT on the last Sunday in October each year. Europe is not currently observing Summer Time.

Timing for 2013:

European Summer Time begins (clocks go forward) at 01:00 GMT on

31 March 2013

European Summer Time ends (clocks go backward) at 01:00 GMT on

27 October 2013

 

World Time Zone

A time zone is a region of the earth that has uniform standard time, usually referred to as the local time. By convention, time zones compute their local time as an offset from UTC (see also Greenwich Mean Time). Local time is UTC plus the current time zone offset for the considered location.

On the figure is a map of standard time zones of the world as of June 2008.

more links:

http://www.timezonecheck.com/

http://24timezones.com/

http://www.usno.navy.mil/USNO/astronomical-applications

 

Daylight saving time

Summer time or daylight saving time (DST) is the practice of advancing clocks so that afternoons have more daylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn. Modern DST was first proposed in 1895 by George Vernon Hudson, a New Zealand entomologist.  Many countries using it but not all absolutely.

The practice is controversial. Adding daylight to afternoons benefits retailing, sports, and other activities that exploit sunlight after working hours, but causes problems for farming, evening entertainment and other occupations tied to the sun. Traffic fatalities are reduced when there is extra afternoon daylight; its effect on health and crime is less clear. Although an early goal of DST was to reduce evening usage of incandescent lighting, formerly a primary use of electricity, modern heating and cooling usage patterns differ greatly, and research about how DST currently affects energy use is limited and often contradictory. Although not used by most of the world's people, daylight saving time is common in high latitudes, (fig. bellow).

Map of countries who use or not DST around the world

 

     DST used

     DST no longer used

     DST never used

 

Lunar Eclipses

Partial Lunar Eclipse on 25 Apr 2013

Moon rise:    17:11

Moon set:     03:01

Magnitude:   0.015

Partial phase begins:          19:59

Time of maximum eclipse:  20:10

Partial phase ends:             20:24

Sun rise: 03:30

Sun set: 17:20

The eclipse is visible from the territory of Bulgaria.

 

Penumbral Lunar Eclipse on 25 May 2013

Penumbral Eclipse Begins:   03:53

Greatest Eclipse:                  04:10

Penumbral Eclipse Ends:     04:26

 

Penumbral Lunar Eclipse on 18 Oct 2013

Penumbral Eclipse Begins:  21:50

Greatest Eclipse:                 23:50

Penumbral Eclipse Ends:    01:49

 

The Penumbral Lunar Eclipses are invisible by naked eyes.

 

Solar Eclipses

 Annular Solar eclipse on 10 May 2013

Sun rise: 03:10

Sun set:  17:37

Time of maximum eclipse: 00:26

Eclipse Magnitude = 0.95

Eclipse is visible in the southern hemisphere

From Bulgaria the solar eclipse is invisible.

 

Hybrid Solar eclipse on 03 Nov 2013

Sun rise: 05:03

Sun set:  15:17

Time of maximum eclipse: 12:46

Eclipse Magnitude = 1.02

Eclipse is total/annular.

This second solar eclipse of 2013 is the most interesting eclipse of the year. It is one of the rare hybrid or annular/total eclipses in which some sections of the path are annular while other parts are total. The duality comes about when the vertex of the Moon's umbral shadow pierces Earth's surface at some locations, but falls short of the planet along other sections of the path.

Eclipse is visible in the southern hemisphere.

From Southern Bulgaria will be visible like a partial eclipse after 15:40 (LT) for some minutes. The solar disk will be covert less than 1%.

 

More information about eclipse on 03 Nov 2013:

http://home.cc.umanitoba.ca/~jander/tot2013/tse13intro.htm

or: http://eclipse.gsfc.nasa.gov/eclipse.html

 

 

Moon Apsides Report for 2013 (astron.lab)

 

Date            Hour    Apsis        Distance (km)    Diameter

10-01-2013     10      Perigee      360048            0.5531o

22-01-2013     11      Apogee     405320             0.4914o

07-02-2013     12      Perigee      365313            0.5452o

19-02-2013     07      Apogee     404490             0.4924o

06-03-2013     00      Perigee      369976            0.5383o

19-03-2013     03      Apogee     404258             0.4926o

31-03-2013     04      Perigee      367498            0.5419o

15-04-2013     22      Apogee     404863             0.4919o

27-04-2013     20      Perigee      362263            0.5498o

13-05-2013     14      Apogee     405853             0.4907o

26-05-2013     02      Perigee      358387            0.5557o

09-06-2013     22      Apogee     406485             0.4899o

23-06-2013     11      Perigee      357013            0.5578o

07-07-2013     00      Apogee     406474             0.4900o

21-07-2013     20      Perigee      358420            0.5557o

03-08-2013     09      Apogee     405850             0.4907o

19-08-2013     01      Perigee      362271            0.5497o

31-08-2013     00      Apogee     404887             0.4919o

15-09-2013     16      Perigee      367388            0.5421o

27-09-2013     18      Apogee     404308             0.4926o

10-10-2013     23      Perigee      369822            0.5385o

25-10-2013     14      Apogee     404584             0.4923o

06-11-2013     09      Perigee      365350            0.5451o

22-11-2013     10      Apogee     405473             0.4912o

04-12-2013     10      Perigee      360063            0.5531o

20-12-2013     00      Apogee     406276             0.4902o

 

 

Twilight Report for 2013 (astron.lab)

Date                 Sun          Astronomical     Nautical          Civil

                    Rise   Set       Begin  End    Begin  End    Begin  End

 

01-01-2013   05:57  15:04   04:10  16:51   04:44  16:16   05:20  15:41

08-01-2013   05:57  15:11   04:11  16:57   04:45  16:23   05:20  15:47

15-01-2013   05:54  15:18   04:10  17:03   04:43  16:30   05:18  15:55

22-01-2013   05:50  15:27   04:07  17:11   04:40  16:37   05:14  16:03

29-01-2013   05:44  15:36   04:02  17:18   04:35  16:45   05:09  16:11

05-02-2013   05:37  15:45   03:56  17:26   04:29  16:53   05:02  16:20

12-02-2013   05:28  15:55   03:48  17:34   04:21  17:02   04:54  16:28

19-02-2013   05:18  16:04   03:39  17:42   04:12  17:10   04:45  16:37

26-02-2013   05:07  16:13   03:29  17:51   04:02  17:18   04:34  16:46

05-03-2013   04:56  16:21   03:18  17:59   03:51  17:26   04:23  16:54

12-03-2013   04:44  16:30   03:06  18:08   03:39  17:35   04:11  17:02

19-03-2013   04:32  16:38   02:53  18:17   03:26  17:43   03:59  17:10

26-03-2013   04:20  16:46   02:39  18:26   03:14  17:52   03:47  17:19

02-04-2013   04:07  16:54   02:25  18:36   03:00  18:01   03:34  17:27

09-04-2013   03:55  17:02   02:11  18:46   02:47  18:10   03:22  17:35

16-04-2013   03:44  17:10   01:57  18:57   02:34  18:19   03:10  17:44

23-04-2013   03:33  17:18   01:42  19:08   02:22  18:29   02:58  17:53

30-04-2013   03:23  17:26   01:28  19:20   02:10  18:39   02:47  18:01

07-05-2013   03:14  17:34   01:15  19:32   01:58  18:49   02:37  18:10

14-05-2013   03:05  17:41   01:02  19:45   01:48  18:59   02:28  18:19

21-05-2013   02:59  17:48   00:51  19:57   01:39  19:08   02:21  18:27

28-05-2013   02:54  17:55   00:41  20:08   01:32  19:17   02:15  18:34

04-06-2013   02:50  18:00   00:33  20:17   01:26  19:24   02:10  18:40

11-06-2013   02:48  18:05   00:28  20:25   01:23  19:30   02:08  18:45

18-06-2013   02:48  18:08   00:27  20:29   01:23  19:33   02:08  18:48

25-06-2013   02:50  18:09   00:29  20:30   01:24  19:34   02:10  18:49

02-07-2013   02:53  18:08   00:34  20:28   01:28  19:33   02:13  18:48

09-07-2013   02:58  18:06   00:41  20:22   01:34  19:30   02:18  18:46

16-07-2013   03:03  18:02   00:51  20:14   01:41  19:24   02:24  18:41

23-07-2013   03:09  17:56   01:02  20:04   01:50  19:16   02:31  18:34

30-07-2013   03:16  17:49   01:14  19:52   01:59  19:07   02:39  18:26

06-08-2013   03:24  17:41   01:26  19:39   02:09  18:56   02:47  18:17

13-08-2013   03:31  17:31   01:37  19:25   02:18  18:44   02:56  18:07

20-08-2013   03:39  17:21   01:49  19:11   02:28  18:32   03:04  17:55

27-08-2013   03:46  17:10   01:59  18:56   02:37  18:19   03:12  17:44

03-09-2013   03:54  16:58   02:10  18:42   02:46  18:06   03:20  17:31

10-09-2013   04:01  16:46   02:19  18:27   02:54  17:52   03:28  17:19

17-09-2013   04:09  16:33   02:29  18:13   03:03  17:39   03:36  17:06

24-09-2013   04:16  16:21   02:37  17:59   03:11  17:26   03:44  16:53

01-10-2013   04:24  16:08   02:46  17:46   03:19  17:13   03:51  16:41

08-10-2013   04:32  15:56   02:54  17:34   03:26  17:01   03:59  16:29

15-10-2013   04:40  15:44   03:02  17:23   03:34  16:50   04:07  16:17

22-10-2013   04:48  15:34   03:09  17:12   03:42  16:40   04:15  16:07

29-10-2013   04:57  15:23   03:17  17:03   03:50  16:30   04:23  15:57

05-11-2013   05:06  15:15   03:25  16:55   03:58  16:22   04:31  15:49

12-11-2013   05:15  15:07   03:32  16:49   04:06  16:16   04:40  15:42

19-11-2013   05:23  15:01   03:40  16:44   04:13  16:11   04:48  15:36

26-11-2013   05:32  14:56   03:47  16:41   04:21  16:07   04:55  15:32

03-12-2013   05:39  14:54   03:53  16:40   04:27  16:06   05:02  15:30

10-12-2013   05:46  14:53   03:59  16:40   04:33  16:06   05:09  15:30

17-12-2013   05:51  14:54   04:04  16:42   04:38  16:07   05:14  15:32

24-12-2013   05:55  14:58   04:08  16:45   04:42  16:11   05:18  15:35

31-12-2013   05:57  15:03   04:10  16:50   04:44  16:16   05:20  15:40



 

Main meteor showers for 2013

 

Shower name

 

Maximum

 

ZHR* at maximum

 

V (km/s)

 

Constellation  radiating

 

Parent Comet

 

Quadrantids

(northern hemisphere)

 

Jan 03

 

80

 

41

 

Bootes

 

2003 EH 1

(asteroid)

 

Lyrids

 

Apr 22

 

18

 

48

 

Lyra

 

C/1861 G1/Thatcher

 

Eta Aquarids

 

May 06

 

35

 

66

 

Aquarius

 

1P/Halley

 

eta Lyrids

 

May 09

 

7

 

31

 

Lyra

 

C/1983 H1

IRAS-Araki-Alcock

 

Delta Aquarids

(Southern hemisphere)

 

July 29

 

20

 

41

 

Aquarius

 

Unknown

 

Capricornids

 

Augt  02

 

5

 

23

 

Capricornus

 

45P

Honda-Mrkos-Pajdusakova

 

Perseids

 

Aug 13

01:00 UT

 

75

 

59

 

Perseus

 

109P/Swift-Tuttle

 

Draconids

 

Oct 08

 

10

 

23

 

Draco

 

21P/Giacobini-Zinner

 

Orionids

 

Oct 22

 

25

 

67

 

Orion

 

1P/Halley

 

Leonids

 

Novr 18

 

62

 

71

 

Leo

 

55P/Tempel-Tuttle

 

Geminids

 

Dec 14

 

75

 

35

 

Gemini

 

3200 Phaethon

 

ZHR* - Zenithal Hourly Rate is for single observer, limiting magnitude 6.5

 

More information for meteor showers:

 

Lunar phase

A lunar phase refers to the appearance of the illuminated portion of the Moon as seen by an observer, usually on Earth. The lunar phases vary cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth, Moon and Sun. One half of the lunar surface is always illuminated by the Sun (except during lunar eclipses), and hence is bright, but the portion of the illuminated hemisphere that is visible to an observer can vary from 100% (full moon) to 0% (new moon). The boundary between the illuminated and unilluminated hemispheres is called the terminator.

 

On the table bellow are shown date and time of lunar phases for 2013 (astron. lab)

 

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
05

03:59

LQ
03

13:58

LQ
04

21:55

LQ
03

04:39

LQ
02

01:17

LQ
11

19:45

NM
10

07:23

NM
11

19:54

NM
10

09:39

NM
10

00:32

NM
08

15:59

NM
08

07:16

NM
06

21:52

NM
05

11:36

NM
05

00:34

NM
03

12:50

NM
03

00:22

NM
18

23:46

FQ
17

20:31

FQ
19

17:28

FQ
18

12:33

FQ
18

04:36

FQ
16

17:25

FQ
16

03:20

FQ
14

10:58

FQ
12

17:10

FQ
11

23:04

FQ
10

05:59

FQ
09

15:13

FQ
27

04:40

FM
25

20:29

FM
27

09:30

FM
25

20:00

FM
25

04:27

FM
23

11:34

FM
22

18:17

FM
21

01:45

FM
19

11:13

FM
18

04:00

FM
17

15:17

FM
17

09:29

FM
31

19:00

 LQ
30

04:55

LQ
29

17:45

LQ
28

09:36

LQ
27

03:56

LQ
26

23:42

LQ
25

19:30

LQ
25

13:50

LQ

 

NM – New Moon

FQ – First Quarter

LQ – Last Quarter

FM – Full Moon