RECON: TNO occultation with 523743

Event between (523743) 14TA86 and star GA1040:00277928 with event index number of 301269

Geocentric closest approach at 2018/10/12 10:36:06 UTC

J2000 position of star is 02:54:43.5 +15:38:27
Equinox of date position of star is 02:55:46.1 +15:42:59
Stellar brightness G=12.3, use SENSEUP=16
Star is 165 degrees from the moon. Moon is 13% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 38.8 AU from the Sun and 37.9 AU from the Earth.
The TNO is moving 22.0 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 109 seconds.
The 1-sigma cross-track error in the shadow position is 1514 km.
The sky-plane scale is 27506.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.0
Diameter=380.2 km assuming a 5% albedo -- 17.3 sec chord
Diameter=155.2 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 523743, (2018/10/12 10:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.0 +16:32:44  0.8 24.31 171
Menkar         03:03:15.8 +04:09:44  2.5 11.70 162
43Sig Ari      02:52:32.0 +15:09:30  5.5  0.96 164
PPM 118650     02:55:20.6 +15:34:15  8.4  0.18 165
PPM 118661     02:56:12.2 +15:40:33  9.6  0.11 165
523743         02:55:46.1 +15:42:59 12.3       165
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 5.0 sigma about the mid-time.
The median site spacing is 22.5 km RECON observability=1.0 and success probability=26.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 10:34:37 -34.9 Dark Down 53.4 206.7 Up 10:25:01 - 10:44:13 -596
Kelowna 10:34:36 -34.7 Dark Down 53.2 207.2 Up 10:25:00 - 10:44:12 -598
Penticton 10:34:37 -35.0 Dark Down 53.6 207.2 Up 10:25:01 - 10:44:13 -629
Okanagan Falls 10:34:37 -35.1 Dark Down 53.8 207.3 Up 10:25:01 - 10:44:13 -646
Oliver 10:34:37 -35.2 Dark Down 53.9 207.4 Up 10:25:01 - 10:44:13 -662
Anarchist Mountain Observatory 10:34:37 -35.2 Dark Down 54.0 207.8 Up 10:25:01 - 10:44:13 -682
Oroville 10:34:37 -35.3 Dark Down 54.1 207.8 Up 10:25:01 - 10:44:13 -688
Tonasket 10:34:37 -35.4 Dark Down 54.3 207.9 Up 10:25:01 - 10:44:13 -710
Okanogan 10:34:37 -35.7 Dark Down 54.6 207.9 Up 10:25:01 - 10:44:13 -739
Brewster 10:34:38 -35.9 Dark Down 54.9 207.8 Up 10:25:02 - 10:44:14 -761
Manson/Chelan 10:34:40 -36.3 Dark Down 55.2 207.3 Up 10:25:04 - 10:44:16 -774
Entiat 10:34:40 -36.4 Dark Down 55.4 207.4 Up 10:25:04 - 10:44:16 -794
Wenatchee 10:34:40 -36.6 Dark Down 55.7 207.4 Up 10:25:04 - 10:44:16 -817
Ellensburg 10:34:41 -37.0 Dark Down 56.1 207.3 Up 10:25:05 - 10:44:17 -852
Yakima 10:34:41 -37.2 Dark Down 56.5 207.6 Up 10:25:05 - 10:44:17 -891
Toppenish/White Swan 10:34:41 -37.2 Dark Down 56.6 208.0 Up 10:25:05 - 10:44:17 -915
Pasco 10:34:37 -36.6 Dark Down 56.3 210.1 Up 10:25:01 - 10:44:13 -951
Goldendale 10:34:43 -37.8 Dark Down 57.3 207.7 Up 10:25:07 - 10:44:19 -960
The Dalles 10:34:44 -38.1 Dark Down 57.6 207.3 Up 10:25:08 - 10:44:20 -975
PNWRO 10:34:36 -36.6 Dark Down 56.5 210.7 Up 10:25:00 - 10:44:12 -979
George/Umatilla 10:34:38 -36.9 Dark Down 56.7 210.0 Up 10:25:02 - 10:44:14 -979
Maupin 10:34:44 -38.3 Dark Down 57.9 207.7 Up 10:25:08 - 10:44:20 -1018
Madras/Culver 10:34:44 -38.6 Dark Down 58.4 208.1 Up 10:25:08 - 10:44:20 -1070
Sisters 10:34:46 -39.1 Dark Down 58.9 207.6 Up 10:25:10 - 10:44:22 -1094
Redmond 10:34:44 -38.9 Dark Down 58.7 208.3 Up 10:25:08 - 10:44:20 -1104
Bend 10:34:45 -39.1 Dark Down 59.0 208.2 Up 10:25:09 - 10:44:21 -1122
Oregon Observatory 10:34:46 -39.2 Dark Down 59.2 208.1 Up 10:25:10 - 10:44:22 -1137
La Pine/Gilchrist 10:34:46 -39.4 Dark Down 59.4 208.2 Up 10:25:10 - 10:44:22 -1155
North Lake 10:34:44 -39.2 Dark Down 59.6 209.6 Up 10:25:08 - 10:44:20 -1211
Chiloquin 10:34:48 -40.2 Dark Down 60.5 208.5 Up 10:25:12 - 10:44:24 -1258
Paisley 10:34:44 -39.3 Dark Down 59.9 210.7 Up 10:25:08 - 10:44:20 -1273
Klamath Falls 10:34:48 -40.3 Dark Down 60.8 208.9 Up 10:25:12 - 10:44:24 -1293
Tulelake 10:34:47 -40.3 Dark Down 60.9 209.7 Up 10:25:11 - 10:44:23 -1327
Lakeview 10:34:43 -39.5 Dark Down 60.3 211.5 Up 10:25:07 - 10:44:19 -1327
Cedarville 10:34:43 -39.7 Dark Down 60.7 212.4 Up 10:25:07 - 10:44:19 -1396
Fall River/Burney 10:34:48 -40.7 Dark Down 61.6 210.7 Up 10:25:12 - 10:44:24 -1419
Susanville 10:34:45 -40.6 Dark Down 61.9 212.6 Up 10:25:09 - 10:44:21 -1498
Greenville 10:34:47 -40.9 Dark Down 62.2 212.4 Up 10:25:11 - 10:44:23 -1520
Gimple 10:34:46 -40.8 Dark Down 62.2 212.5 Up 10:25:10 - 10:44:22 -1522
Quincy 10:34:47 -41.0 Dark Down 62.4 212.6 Up 10:25:11 - 10:44:23 -1540
Portola 10:34:45 -40.7 Dark Down 62.3 213.6 Up 10:25:09 - 10:44:21 -1563
Reno 10:34:43 -40.4 Dark Down 62.2 215.1 Up 10:25:07 - 10:44:19 -1604
Carson City 10:34:43 -40.6 Dark Down 62.5 215.5 Up 10:25:07 - 10:44:19 -1641
Gardnerville 10:34:43 -40.7 Dark Down 62.7 215.9 Up 10:25:07 - 10:44:19 -1667
Yerington 10:34:41 -40.3 Dark Down 62.4 216.9 Up 10:25:05 - 10:44:17 -1674
Hawthorne 10:34:39 -40.1 Dark Down 62.5 218.4 Up 10:25:03 - 10:44:15 -1733
Lee Vining 10:34:41 -40.7 Dark Down 63.2 218.2 Up 10:25:05 - 10:44:17 -1781
Niwot 10:33:52 -30.0 Dark Down 53.9 236.2 Up 10:24:16 - 10:43:28 -1797
Tonopah 10:34:34 -39.3 Dark Down 62.2 221.4 Up 10:24:58 - 10:44:10 -1810
Bishop 10:34:39 -40.5 Dark Down 63.3 220.2 Up 10:25:03 - 10:44:15 -1857
Beatty 10:34:34 -39.5 Dark Down 62.8 223.7 Up 10:24:58 - 10:44:10 -1939
Lone Pine 10:34:38 -40.6 Dark Down 63.7 221.8 Up 10:25:02 - 10:44:14 -1943
Indian Springs 10:34:30 -38.8 Dark Down 62.4 226.0 Up 10:24:54 - 10:44:06 -1995
CPSLO 10:34:49 -43.0 Dark Down 66.0 218.8 Up 10:25:13 - 10:44:25 -2021
Henderson 10:34:27 -38.5 Dark Down 62.4 227.8 Up 10:24:51 - 10:44:03 -2064
Searchlight/Boulder City 10:34:27 -38.7 Dark Down 62.7 228.8 Up 10:24:51 - 10:44:03 -2126
Patrick 10:34:24 -37.9 Dark Down 62.1 230.5 Up 10:24:48 - 10:44:00 -2152
Laughlin/Bullhead City 10:34:26 -38.6 Dark Down 62.7 229.7 Up 10:24:50 - 10:44:02 -2164
Kingman/Dolan Springs 10:34:24 -38.2 Dark Down 62.4 230.5 Up 10:24:48 - 10:44:00 -2171
Mohave Valley 10:34:26 -38.6 Dark Down 62.9 230.2 Up 10:24:50 - 10:44:02 -2192
Wildwood 10:34:42 -42.0 Dark Down 65.8 224.5 Up 10:25:06 - 10:44:18 -2193
DCO 10:34:21 -37.5 Dark Down 61.9 232.0 Up 10:24:45 - 10:43:57 -2197
Lake Havasu City 10:34:26 -38.6 Dark Down 63.0 231.2 Up 10:24:50 - 10:44:02 -2240
Idyllwild 10:34:35 -40.7 Dark Down 65.0 228.5 Up 10:24:59 - 10:44:11 -2271
Parker 10:34:26 -38.7 Dark Down 63.2 231.7 Up 10:24:50 - 10:44:02 -2277
Blythe 10:34:27 -39.1 Dark Down 63.7 232.1 Up 10:24:51 - 10:44:03 -2327
Calipatria 10:34:31 -40.0 Dark Down 64.6 231.4 Up 10:24:55 - 10:44:07 -2360
Yuma 10:34:28 -39.4 Dark Down 64.3 233.6 Up 10:24:52 - 10:44:04 -2424

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 523743, (2018/10/12 10:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 24.31 171
Menkar         03:02:16.8 +04:05:21  2.5 11.70 162
43Sig Ari      02:51:29.6 +15:04:55  5.5  0.96 164
PPM 118650     02:54:18.0 +15:29:43  8.4  0.18 165
PPM 118661     02:55:09.6 +15:36:02  9.6  0.11 165
523743         02:54:43.5 +15:38:27 12.3       165
Positions are for J2000

Event circumstances last updated at 2018/10/15 03:58:00 UT

Marc W. Buie, Southwest Research Institute

RECON