Total lunar eclipse of 2018, January 31 The beginning of the eclipse is visible from Asia, Australia, New Zealand, Northern and Central America, Pacific, and Arctic oceans. The end of the eclipse is visible from Eurasia, northeast of Africa, Mada- gascar, Australia, New Zealand, western part of Pacific, Arctic, and Indian oceans. Universal time of geocentric opposition h m s in right ascension 2018, January 31, 13 35 36.7 Sun Moon h m s h m s Right ascension . . . . . . . . . . . . . 20 56 19.818 8 56 19.816 s s Hourly motion . . . . . . . . . . . . . +10.213 +154.346 ° ' " ° ' " Declination. . . . . . . . . . . . . . . . -17 17 42.95 +16 59 03.75 " " Hourly motion . . . . . . . . . . . . . +42.12 -421.26 " ' " Equatorial horizontal parallax . . . . . . 8.93 60 52.46 ' " ' " Apparent semidiameter . . . . . . . . . . 16 14.00 16 35.27 Circumstances of the Eclipse Position Angles of the Moon's axis h m ° Moon enters penumbra . . . . . . . January 31, 10 49.6 17.04 Moon enters umbra . . . . . . . . 11 47.9 17.23 Moon enters totality . . . . . . . 12 51.3 17.44 Greatest eclipse . . . . . . . . . 13 29.8 17.56 Moon leaves totality . . . . . . . 14 08.3 17.69 Moon leaves umbra . . . . . . . . 15 11.7 17.89 Moon leaves penumbra . . . . . . . 16 10.1 18.07 ─────────┬───────────┬────────────────────── Contacts| Position │The Moon being in the Zenith in of umbra| Angles ├──────────┬─────────── with Limb| from the │ │ of Moon |North Point│ Latitude | Longitude ─────────┼───────────┼──────────┼─────────── │ ° ' │ ° ' │ ° ' First │ 82 55.5 │ +17 18.0 │ 174 42.6 W Last │ 297 50.8 │ +16 54.1 │ 136 24.3 E Magnitude of the eclipse 1.324 " Angular radius of the penumbra 4727.27 " Angular radius of the umbra 2740.94 ─────┬─────┬──────┬──────┬──────────────╥─────┬─────┬──────┬──────┬───────────── │ │ │ │Magnitudes of ║ │ │ │ │Magnitudes of T │ s │ d │ P ├──────┬───────╢ T │ s │ d │ P ├──────┬────── │ │ │ |umbral| penum.║ │ │ │ │umbral| penum. │ │ │ eclipse|eclipse║ │ │ │ eclipse|eclipse ─────┼─────┼──────┼──────┼──────┼───────╫─────┼─────┼──────┼──────┼──────┼────── h m│ "│ │ ° │ │ ║ h m│ "│ │ ° │ │ 10 40| 6056| 2.206| 89.9| - | - ║13 40| 1157| 0.422| 352.4| 1.296| 2.293 50| 5712| 2.081| 89.2| - | 0.008 ║ 50| 1308| 0.477| 337.7| 1.220| 2.218 | | | | | ║ | | | | | 11 00| 5368| 1.956| 88.5| - | 0.180 ║14 00| 1526| 0.557| 326.6| 1.110| 2.108 10| 5025| 1.831| 87.7| - | 0.352 ║ 10| 1787| 0.652| 318.4| 0.979| 1.977 20| 4683| 1.707| 86.8| - | 0.524 ║ 20| 2074| 0.757| 312.5| 0.835| 1.833 30| 4343| 1.583| 85.7| - | 0.694 ║ 30| 2378| 0.868| 308.0| 0.682| 1.680 40| 4005| 1.460| 84.4| - | 0.864 ║ 40| 2694| 0.983| 304.5| 0.523| 1.522 50| 3669| 1.338| 82.9| 0.035| 1.033 ║ 50| 3017| 1.101| 301.8| 0.361| 1.359 | | | | | ║ | | | | | 12 00| 3336| 1.216| 81.1| 0.202| 1.200 ║15 00| 3345| 1.221| 299.6| 0.196| 1.194 10| 3007| 1.096| 78.9| 0.367| 1.365 ║ 10| 3677| 1.342| 297.8| 0.029| 1.027 20| 2684| 0.979| 76.2| 0.529| 1.527 ║ 20| 4013| 1.465| 296.3| - | 0.859 30| 2368| 0.864| 72.7| 0.688| 1.685 ║ 30| 4351| 1.588| 295.1| - | 0.689 40| 2064| 0.753| 68.2| 0.840| 1.838 ║ 40| 4690| 1.712| 294.0| - | 0.518 50| 1778| 0.648| 62.1| 0.984| 1.982 ║ 50| 5031| 1.836| 293.1| - | 0.347 | | | | | ║ | | | | | 13 00| 1518| 0.554| 53.9| 1.114| 2.112 ║16 00| 5373| 1.961| 292.2| - | 0.175 10| 1302| 0.475| 42.6| 1.223| 2.221 ║ 10| 5716| 2.086| 291.5| - | 0.002 20| 1153| 0.421| 27.8| 1.298| 2.295 ║ 20| 6060| 2.212| 290.9| - | - 30| 1101| 0.402| 10.1| 1.324| 2.322 ║ | | | | | T - universal time ( TDT - UT1 = 69.0s); s - the angular distance between the centers of the Moon and the shadow; d - the linear distance between the Moon's center and that of the shadow in terms of the shadow's radius; P - the position angle of the Moon's disk semi-diameter directed towards the shadow's center.