RECON: TNO occultation with 94EV3

Event between 94EV3 and star UC4-362-068355 with event index number of 114996

Geocentric closest approach at 2018/04/27 09:43:06 UTC

J2000 position of star is 14:57:41.6 -17:41:39
Equinox of date position of star is 14:58:40.1 -17:45:46
Stellar brightness R=16.3, use SENSEUP=128
Star is 43 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 44.6 AU from the Sun and 43.7 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 315 seconds.
The 1-sigma cross-track error in the shadow position is 5208 km.
The sky-plane scale is 31664.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=226.0 km assuming a 5% albedo -- 9.2 sec chord
Diameter=92.2 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 94EV3, (2018/04/27 09:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.0 -26:28:16  0.9 22.93  65
27Bet Lib      15:17:59.7 -09:26:58  2.6  9.54  45
PPM 229408     14:52:53.2 -18:25:47  6.2  1.54  42
PPM 229553     14:59:06.9 -17:26:12  6.9  0.34  43
PPM 229556     14:59:09.8 -17:54:53  9.5  0.18  43
94EV3          14:58:43.5 -17:46:01 16.3        43
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 2.9 sigma about the mid-time.
The median site spacing is 11.3 km RECON observability=1.0 and success probability=1.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:43:20 -22.8 Dark Up 21.6 197.7 Low 09:28:20 - 09:58:20 9384
Tonasket 09:43:19 -23.0 Dark Up 21.8 197.8 Low 09:28:19 - 09:58:19 9376
Okanogan 09:43:20 -23.3 Dark Up 22.2 197.7 Low 09:28:20 - 09:58:20 9361
Brewster 09:43:20 -23.6 Dark Up 22.5 197.5 Low 09:28:20 - 09:58:20 9348
Manson/Chelan 09:43:20 -23.9 Dark Up 22.8 197.2 Low 09:28:20 - 09:58:20 9335
Entiat 09:43:20 -24.2 Dark Up 23.0 197.1 Low 09:28:20 - 09:58:20 9326
Wenatchee 09:43:20 -24.4 Dark Up 23.2 197.0 Low 09:28:20 - 09:58:20 9315
Ellensburg 09:43:22 -24.9 Dark Up 23.7 196.9 Low 09:28:22 - 09:58:22 9295
Pasco 09:43:15 -25.0 Dark Up 24.1 198.4 Low 09:28:15 - 09:58:15 9284
Yakima 09:43:20 -25.2 Dark Up 24.1 196.9 Low 09:28:20 - 09:58:20 9278
PNWRO 09:43:14 -25.2 Dark Up 24.3 198.7 Low 09:28:14 - 09:58:14 9277
Toppenish/White Swan 09:43:19 -25.4 Dark Up 24.3 197.1 Low 09:28:19 - 09:58:19 9272
George/Umatilla 09:43:17 -25.4 Dark Up 24.5 198.2 Low 09:28:17 - 09:58:17 9267
Goldendale 09:43:20 -26.0 Dark Up 24.9 196.7 Low 09:28:20 - 09:58:20 9243
The Dalles 09:43:21 -26.3 Dark Up 25.2 196.4 Low 09:28:21 - 09:58:21 9228
Maupin 09:43:20 -26.6 Dark Up 25.5 196.6 Low 09:28:20 - 09:58:20 9211
Madras/Culver 09:43:19 -27.1 Dark Up 26.1 196.6 Low 09:28:19 - 09:58:19 9187
Redmond 09:43:19 -27.5 Dark Up 26.4 196.6 Low 09:28:19 - 09:58:19 9170
Sisters 09:43:20 -27.6 Dark Up 26.5 196.2 Low 09:28:20 - 09:58:20 9165
Bend 09:43:19 -27.7 Dark Up 26.7 196.5 Low 09:28:19 - 09:58:19 9159
Niwot 09:42:24 -23.9 Dark Up 25.2 213.2 Low 09:27:24 - 09:57:24 9151
Oregon Observatory 09:43:19 -27.9 Dark Up 26.8 196.4 Low 09:28:19 - 09:58:19 9149
La Pine/Gilchrist 09:43:19 -28.1 Dark Up 27.1 196.3 Low 09:28:19 - 09:58:19 9138
North Lake 09:43:16 -28.3 Dark Up 27.4 197.0 Low 09:28:16 - 09:58:16 9127
Paisley 09:43:14 -28.7 Dark Up 27.8 197.5 Low 09:28:14 - 09:58:14 9106
Lakeview 09:43:12 -29.0 Dark Up 28.2 197.7 Low 09:28:12 - 09:58:12 9085
Chiloquin 09:43:19 -29.2 Dark Up 28.2 196.1 Low 09:28:19 - 09:58:19 9080
Klamath Falls 09:43:19 -29.5 Dark Up 28.5 196.2 Low 09:28:19 - 09:58:19 9065
Tulelake 09:43:17 -29.6 Dark Up 28.7 196.6 Low 09:28:17 - 09:58:17 9056
Cedarville 09:43:13 -29.5 Dark Up 28.8 198.0 Low 09:28:13 - 09:58:13 9055
Fall River/Burney 09:43:14 -30.4 Dark Up 29.6 196.8 Low 09:28:14 - 09:58:14 9012
Susanville 09:43:11 -30.7 Dark Up 30.0 197.7 Up 09:28:11 - 09:58:11 8991
Gimple 09:43:12 -31.0 Dark Up 30.3 197.5 Up 09:28:12 - 09:58:12 8973
Greenville 09:43:12 -31.0 Dark Up 30.3 197.4 Up 09:28:12 - 09:58:12 8972
Portola 09:43:09 -31.1 Dark Up 30.5 198.0 Up 09:28:09 - 09:58:09 8963
Quincy 09:43:12 -31.2 Dark Up 30.5 197.5 Up 09:28:12 - 09:58:12 8961
Reno 09:43:07 -31.1 Dark Up 30.6 198.7 Up 09:28:07 - 09:58:07 8958
Carson City 09:43:08 -31.4 Dark Up 31.0 198.8 Up 09:28:08 - 09:58:08 8940
Yerington 09:43:04 -31.3 Dark Up 31.0 199.5 Up 09:28:04 - 09:58:04 8939
Gardnerville 09:43:06 -31.6 Dark Up 31.2 198.9 Up 09:28:06 - 09:58:06 8927
Hawthorne 09:43:03 -31.5 Dark Up 31.3 200.2 Up 09:28:03 - 09:58:03 8921
Tonopah 09:42:58 -31.3 Dark Up 31.3 201.8 Up 09:27:58 - 09:57:58 8917
Lee Vining 09:43:03 -32.2 Dark Up 32.0 199.8 Up 09:28:03 - 09:58:03 8884
Bishop 09:43:00 -32.4 Dark Up 32.3 200.7 Up 09:28:00 - 09:58:00 8860
Beatty 09:42:55 -32.1 Dark Up 32.3 202.5 Up 09:27:55 - 09:57:55 8858
Indian Springs 09:42:50 -31.9 Dark Up 32.2 203.7 Up 09:27:50 - 09:57:50 8854
Henderson 09:42:46 -32.0 Dark Up 32.5 204.6 Up 09:27:46 - 09:57:46 8832
Lone Pine 09:42:58 -32.9 Dark Up 32.9 201.2 Up 09:27:58 - 09:57:58 8822
Patrick 09:42:42 -31.9 Dark Up 32.7 205.9 Up 09:27:42 - 09:57:42 8810
DCO 09:42:40 -31.8 Dark Up 32.7 206.7 Up 09:27:40 - 09:57:40 8801
Searchlight/Boulder City 09:42:45 -32.4 Dark Up 33.0 204.8 Up 09:27:45 - 09:57:45 8800
Kingman/Dolan Springs 09:42:42 -32.2 Dark Up 33.0 205.8 Up 09:27:42 - 09:57:42 8795
Laughlin/Bullhead City 09:42:43 -32.5 Dark Up 33.2 205.3 Up 09:27:43 - 09:57:43 8786
Mohave Valley 09:42:43 -32.7 Dark Up 33.4 205.3 Up 09:27:43 - 09:57:43 8770
Lake Havasu City 09:42:41 -32.9 Dark Up 33.7 205.7 Up 09:27:41 - 09:57:41 8749
Parker 09:42:40 -33.2 Dark Up 34.0 205.8 Up 09:27:40 - 09:57:40 8728
CPSLO 09:43:05 -35.1 Dark Up 34.9 198.7 Up 09:28:05 - 09:58:05 8704
Blythe 09:42:42 -33.7 Dark Up 34.6 205.7 Up 09:27:42 - 09:57:42 8692
Idyllwild 09:42:48 -34.7 Dark Up 35.2 203.4 Up 09:27:48 - 09:57:48 8671
Wildwood 09:42:56 -35.3 Dark Up 35.4 201.2 Up 09:27:56 - 09:57:56 8664
Calipatria 09:42:44 -34.6 Dark Up 35.3 204.8 Up 09:27:44 - 09:57:44 8649
Yuma 09:42:40 -34.5 Dark Up 35.4 205.9 Up 09:27:40 - 09:57:40 8634

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 94EV3, (2018/04/27 09:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 22.93  65
27Bet Lib      15:17:00.3 -09:22:59  2.6  9.54  45
PPM 229408     14:51:51.3 -18:21:19  6.2  1.54  42
PPM 229553     14:58:05.2 -17:21:51  6.9  0.34  43
PPM 229556     14:58:07.9 -17:50:32  9.5  0.18  43
94EV3          14:57:41.6 -17:41:39 16.3        43
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:23:27 UT

Marc W. Buie, Southwest Research Institute

RECON