Uranus_2031-02-21T13_09_40.7000_IRTF.txt Occultation predictions computed by rfrench@wellesley.edu Sun Jun 11 11:28:36 2023 target : Uranus target radius (km) : 25559.00 C/A epoch : 2031-02-21T11:54:12.350 Event type : PtRgt : Uranus occs: topocentric, not geoecetric : Ring occs: geocentric, topocentric Observer code : IRTF Location : Mauna Kea/IRTF Latitude (deg) : 19.82622 E. Longitude (deg) : 204.52800 Altitude (km) : 4.168 Gaia source ID : 3415408747410005632 2Mass ID (if available) : 05093215+2301564 ICRS Star Coord at Epoch: 05h 09m 32.14297s +23:01:56.30531s RUWE (>1.4 is poor) : 0.99 K magnitude : 14.674 G magnitude : 18.469 RP magnitude : 17.314 BP magnitude : 19.955 DUPflag : 0 Distance (au) : 18.843 f0 (km) : 0.000 g0 (km) : 0.000 skyplane vel. (km/s) : -1.96 Sun-Target sep (deg) : 106.14 Sun-Moon sep (deg) : 107.06 B (ring opening deg) : 82.14 PA of pole (deg) : 0.51 Pole direction: RA (deg): 257.31100 Dec (deg): -15.17500 C/A sky separation (") : 2.328 C/A sky separation (km) : 31810.8 NAIF SPICE kernels : RAJobs_U111+rgf15.spk URKALLv1.spk ura111.bsp IAU_URANUS_for_RINGFIT.tpc vgr2.ura111.bsp ura161.bsp vgr2.ura161.bsp peph.ura160.bsp earthstns_itrf93_040916.bsp earth_720101_070426.bpc earth_200101_990628_predict.bpc pg3f0000r.bsp pg490000r.bsp naif0012.tls earth_flat_IAU.spk b: ring blocked by planet x: target alt < 5.0 deg or sun > -5.0 deg Ring I/E UTC b? alt alt-sun radius r-dot lat-geo lat-geodetic --------------------------------------------------------------------------------------------------- epsilon I 2031-02-21T07:08:37.016 66.65 -39.44 50881.00 -1.98 lambda I 2031-02-21T07:15:50.123 64.99 -41.14 50026.71 -1.96 delta I 2031-02-21T07:30:46.527 61.54 -44.65 48300.35 -1.89 gamma I 2031-02-21T07:36:46.741 60.16 -46.05 47623.36 -1.87 eta I 2031-02-21T07:40:47.698 59.23 -46.99 47176.12 -1.85 beta I 2031-02-21T07:54:38.664 56.04 -50.23 45669.47 -1.78 alpha I 2031-02-21T08:03:22.336 54.03 -52.27 44749.69 -1.73 4 I 2031-02-21T08:24:40.348 49.12 -57.21 42614.35 -1.61 5 I 2031-02-21T08:27:51.533 48.39 -57.94 42302.37 -1.59 6 I 2031-02-21T08:32:47.296 47.26 -59.07 41840.14 -1.56 No planet occultations 6 E 2031-02-21T16:20:20.540 -44.18x -7.02 41879.33 0.91 5 E 2031-02-21T16:27:44.814 -44.80x -5.30 42290.05 0.92 4 E 2031-02-21T16:32:44.318 -45.18x -4.14x 42564.60 0.92 alpha E 2031-02-21T17:10:56.779 -47.04x 4.68x 44706.98 0.95 beta E 2031-02-21T17:27:58.684 -47.23x 8.58x 45679.54 0.96 eta E 2031-02-21T17:53:47.202 -46.75x 14.43x 47176.12 0.97 gamma E 2031-02-21T18:01:23.344 -46.43x 16.14x 47622.03 0.98 delta E 2031-02-21T18:12:52.503 -45.81x 18.71x 48300.35 0.99 lambda E 2031-02-21T18:41:40.011 -43.54x 25.06x 50026.71 1.01 epsilon E 2031-02-21T18:55:56.413 -42.07x 28.15x 50897.61 1.02