May 1998

June 1998

July 1998


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Day Moonage Phenomenon (JST)
1 Mon 6.3 RT-Sgr is at maximum brightness (Mag:Period 306 days, 6.0-14.1)
2 Tue 7.3 10:45 First quarter moon
3 Wed 8.3 09:45 Moon is closest to Asteroid Juno (03o58'.4)
4 Thu 9.3 12:19 Moon passes equator, to southern hemisphere
23:52 Delta-Lib is at minimum brightness
5 Fri 10.3 09h Moon is farthest from the Earth (404,932km,Dia.:29'30".6)
19:58 Mercury passes 00o15'.6 south of Mars
21:10 Mars is closest to Mercury (00o15'.6)
6 Sat 11.3 06:13 Longitude of the sun reaches 75 degrees
7 Sun 12.3
8 Mon 13.3 Ari meteor shower is at peak(May 29-Jun.18)
9 Tue 14.3 15:15 Moon passes 07o29'.2 south of Pluto
21h Heliocentric latitude of Venus is most at south
10 Wed 15.3 Toki-no-kinenbi
T-Col is at maximum brightness (Mag:Period 227 days, 6.6-12.7)
08:18 Asteroid Vesta is closest to Sun (02o10'.9)
09:29 Mercury is closest to Asteroid Vesta (02o59'.2)
12:42 Asteroid Vesta is at conjunction
13:18 Full Moon
13:58 Mercury is closest to Sun (00o50'.0)
17:16 Mercury is at exferrior conjunction(00o51'.1,Mag:-2.3,Dia.:5".1 north of Sun)
11 Thu 16.3 11:43 Longitude of the sun reaches 80 degrees
21:42 Moon is at south most(Decl.:-19o01'.7)
23:27 Delta-Lib is at minimum brightness
12 Fri 17.3
13 Sat 18.3 21:10 Moon passes 02o21'.8 north of Neptune
14 Sun 19.3 16:43 Moon passes 02o34'.1 north of Uranus
15 Mon 20.3
16 Tue 21.3
17 Wed 22.3 V-Cas is at maximum brightness (Mag:Period 229 days, 6.9-13.4)
19:38 Last quarter moon
20:01 Moon passes 00o48'.0 south of Jupiter(Occultation in South America)
18 Thu 23.3 13:04 Moon passes equator, to northern hemisphere
23:01 Delta-Lib is at minimum brightness
19 Fri 24.3 RR-Sco is at maximum brightness (Mag:Period 281 days, 5.0-12.4)
13:06 Jupiter is most at west(Mag:-2.4,Dia.:40".5)
20 Sat 25.3 V-Mon is at maximum brightness (Mag:Period 340 days,6.0-13.9)
05:17 Moon passes 01o59'.7 south of Saturn
14h Heliocentric latitude of Mercury is most at north
21 Sun 26.3 S-Ser is at maximum brightness (Mag:Period 371 days, 7.0-14.1)
02h Moon is nearest to the Earth (366,590km,Dia.:32'35".8)
21:58 Mars is farthest from the Earth(2.5184751AU,Mag:1.5,Dia.:3".7)
23:03 Longitude of the sun reaches 90 degrees
23:27 Moon passes 03o19'.5 south of Venus
22 Mon 27.3
23 Tue 28.3 T-Her is at maximum brightness (Mag:Period 165 days, 6.8-13.7)
17:00 Moon passes 05o18'.8 south of Mars
23:53 Moon is closest to Asteroid Vesta (02o47'.0)
24 Wed 29.3 12:50 New Moon
20:01 Moon is at north most(Decl.:+19o02'.5)
25 Thu 1.0 R-UMa is at maximum brightness (Mag:Period 301 days, 6.5-13.7)
21:44 Moon passes 05o23'.0 south of Mercury
22:36 Delta-Lib is at minimum brightness
26 Fri 2.0
27 Sat 3.0
28 Sun 4.0 21:37 Moon closes to Regulus (Mag:1.3) (01o27'.7 in Tokyo)
29 Mon 5.0
30 Tue 6.0

Special Thanks to Shirakawa Astronomical Observatory

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