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January 1998 |
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| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sep. | Oct. | Nov. | Dec. |
| 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 |
| Day | Moonage | Phenomenon (JST) | |
|---|---|---|---|
| 1 | Thu | 2.4 | New Year's Day (Ganjitsu)(Sunrise: Tokyo 06:51, Osaka 07:05, Fukuoka 07:23) |
| 00:43 Algol is at minimum brightness | |||
| 05:40 Moon passes 03o35'.2 north of Uranus | |||
| 12:20 Moon passes 03o53'.5 north of Mars | |||
| 2 | Fri | 3.4 | U-Cet is at maximum brightness (Mag:Period 234 days, 6.8-13.4) |
| 07:37 Moon passes 02o40'.4 north of Jupiter | |||
| 3 | Sat | 4.4 | Meteor shower from Comet Hale-Bopp? |
| 13:48 Saturn is most at east(Mag:0.7,Dia.:17".8,Ring: 40".3x6".3) | |||
| 18h Moon is nearest to the Earth (369,237km,Dia.:32'21".8) | |||
| 21:32 Algol is at minimum brightness | |||
| 4 | Sun | 5.4 | Mira is at maximum brightness (Mag:Period 332 days, 2.3-10.1) |
| 01h Iota-Dra meteor shower is at peak (Jan.1 - Jan.5) | |||
| 19:54 Lambda-Tau is at minimum brightness | |||
| 5 | Mon | 6.4 | 05:19 Mon passes equator, to northern hemisphere |
| 06:08 Earth passses perihelion (0.9832997AU) | |||
| 21:13 Moon passes 00o12'.5 south of Saturn (Occultation in Southeast Asia) | |||
| Longitude of the sun reaches 285 degrees | |||
| 23:18 First quarter moon | |||
| 6 | Tue | 7.4 | 08:57 Moon is closest to Asteroid Vesta (03o50'.1) |
| 18:21 Algol is at minimum brightness | |||
| 23:17 Mercury is at western greatest elongation(23o03'.8,Mag:-0.2,Dia.:6".6) | |||
| 7 | Wed | 8.4 | 20h Mars passses perihelion(1.38149AU) |
| 8 | Thu | 9.4 | 08:59 Neptune is closest to Venus (03o54'.1) |
| 18:47 Lambda-Tau is at minimum brightness | |||
| 9 | Fri | 10.4 | 17:09 Occultation of Theta-Tau1(Mag:4.0) in Hyades |
| 17:36 Grazing of Theta-Tau2(Mag:3.3) at Tokyo - Hamamatsu - Ise - Kagoshima (South edge, Moonage:10.7) | |||
| 21:39 Occultation of Aldebaran(Mag:1.1) (Tokyo) | |||
| 10 | Sat | 11.4 | 01:43 Venus passes 04o00'.5 north of Neptune |
| 11 | Sun | 12.4 | 18:18 Moon is at north most(Decl.:+18o39'.1) |
| 12 | Mon | 13.4 | 17:40 Lambda-Tau is at minimum brightness |
| 13 | Tue | 14.4 | R-Tri is at maximum brightness (Mag:Period 265 days, 5.4-12.6) |
| 02:24 Full Moon | |||
| 14 | Wed | 15.4 | |
| 15 | Thu | 16.4 | National Holiday in Japan (Seijin no ni) |
| 16 | Fri | 17.4 | 04:41 Venus is at inferior conjunction(05o47'.3,Mag:-4.1,Dia.:62".5 north of Sun) |
| 09:58 Venus is closest to Sun (05o46'.7) | |||
| 17 | Sat | 18.4 | Longitude of the sun reaches 297 degrees |
| 18 | Sun | 19.4 | |
| 19 | Mon | 20.4 | Com meteor shower is at peak(Jan.10-Jan.25) |
| 00:28 Moon passes equator, to southern hemisphere | |||
| 03:39 Moon is closest to Asteroid Juno (03o07'.4) | |||
| 06h Moon is farthest from the Earth (404,632km,Dia.:29'31".9) | |||
| 20 | Tue | 21.4 | 05:41 Neptune is at conjunction (00o22'.1,Mag:8.0,Dia.:2".2 north of Sun) |
| Longitude of the sun reaches 300 degrees | |||
| 21 | Wed | 22.4 | 02:27 Algol is at minimum brightness |
| 04:40 Last quarter moon | |||
| 10:13 Mars passes 00o11'.9 south of Jupiter | |||
| 13:13 Jupiter is closest to Mars (00o11'.2) | |||
| 22 | Thu | 23.4 | |
| 23 | Fri | 24.4 | 04:14.3 Occultation of Gamma-Lib(Mag:4.0) (Tokyo) |
| 23:17 Algol is at minimum brightness | |||
| 24 | Sat | 25.4 | 06:29 Moon passes 06o52'.1 south of Pluto |
| 25 | Sun | 26.4 | |
| 26 | Mon | 27.4 | 06:34 Mon is at south most(Decl.:-18o35'.9) |
| 20:06 Algol is at minimum brightness | |||
| 27 | Tue | 28.4 | 01:47 Mercury passes 08o10'.9 south of Venus |
| 08:31 Moon passes 03o08'.7 south of Venus | |||
| 09:34 Moon passes 05o03'.3 north of Mercury | |||
| 28 | Wed | 29.4 | 02:27 Moon passes 03o04'.7 north of Neptune |
| 15:01 New Moon | |||
| 17:28 Moon passes 03o25'.6 north of Uranus | |||
| 29 | Thu | 0.9 | 09:14 Uranus is at conjunction(00o37'.4,Mag:5.9,Dia.:3".4 south of Sun) |
| 30 | Fri | 1.9 | 02:05 Moon passes 02o01'.7 north of Jupiter |
| 10:10 Moon passes 01o41'.5 north of Mars | |||
| 23h Moon is nearest to the Earth (363,807km,Dia.:32'50".8) | |||
| 31 | Sat | 2.9 | |
