RECON: TNO occultation with 523751

Event between (523751) 14UU224 and star UC4-484-008129 with event index number of 355434

Geocentric closest approach at 2018/10/17 12:32:14 UTC

J2000 position of star is 04:48:05.8 +06:47:46
Equinox of date position of star is 04:49:06.4 +06:49:42
Stellar brightness R=15.9, use SENSEUP=128
Star is 127 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 30.6 AU from the Sun and 30.0 AU from the Earth.
The TNO is moving 15.7 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 90 seconds.
The 1-sigma cross-track error in the shadow position is 1158 km.
The sky-plane scale is 21736.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 14.6 sec chord
Diameter=93.5 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523751, (2018/10/17 12:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.1 +16:32:44  0.8 10.16 127
Bellatrix      05:26:08.4 +06:21:55  1.6  9.21 136
1Pi 3Ori       04:50:51.7 +06:59:33  3.2  0.47 128
PPM 147967     04:48:18.2 +05:49:14  6.4  1.03 127
1Pi 3Ori       04:50:51.7 +06:59:33  3.2  0.47 128
PPM 148002     04:49:45.2 +07:02:16 10.9  0.26 128
523751         04:49:06.4 +06:49:42 15.9       128
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 22.8 km RECON observability=1.0 and success probability=33.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 12:28:35 -19.1 Dark Down 43.2 210.3 Up 12:20:33 - 12:36:36 -230
Penticton 12:28:36 -19.2 Dark Down 43.6 210.2 Up 12:20:34 - 12:36:37 -256
Okanagan Falls 12:28:36 -19.3 Dark Down 43.8 210.3 Up 12:20:34 - 12:36:37 -272
Southern Okanagan 12:28:36 -19.3 Dark Down 43.9 210.4 Up 12:20:34 - 12:36:37 -287
Oroville 12:28:36 -19.2 Dark Down 44.1 210.7 Up 12:20:34 - 12:36:37 -311
Tonasket 12:28:36 -19.3 Dark Down 44.3 210.8 Up 12:20:34 - 12:36:37 -332
Okanogan 12:28:37 -19.4 Dark Down 44.6 210.8 Up 12:20:35 - 12:36:38 -356
Brewster 12:28:38 -19.6 Dark Down 44.9 210.6 Up 12:20:36 - 12:36:39 -374
Manson/Chelan 12:28:39 -19.8 Dark Down 45.2 210.3 Up 12:20:38 - 12:36:41 -380
Entiat 12:28:40 -19.9 Dark Down 45.4 210.3 Up 12:20:38 - 12:36:41 -397
Wenatchee 12:28:40 -20.0 Dark Down 45.7 210.3 Up 12:20:39 - 12:36:42 -416
Ellensburg 12:28:42 -20.2 Dark Down 46.1 210.2 Up 12:20:40 - 12:36:43 -445
Yakima 12:28:42 -20.3 Dark Down 46.5 210.4 Up 12:20:41 - 12:36:44 -481
Toppenish/White Swan 12:28:42 -20.2 Dark Down 46.6 210.7 Up 12:20:41 - 12:36:44 -505
Goldendale 12:28:44 -20.6 Dark Down 47.2 210.5 Up 12:20:43 - 12:36:46 -540
The Dalles 12:28:46 -20.8 Dark Down 47.5 210.1 Up 12:20:45 - 12:36:48 -548
Pasco 12:28:37 -19.4 Dark Down 46.2 212.5 Up 12:20:35 - 12:36:38 -556
George/Umatilla 12:28:38 -19.5 Dark Down 46.6 212.4 Up 12:20:37 - 12:36:40 -579
PNWRO 12:28:36 -19.2 Dark Down 46.4 212.9 Up 12:20:34 - 12:36:37 -586
Maupin 12:28:46 -20.8 Dark Down 47.9 210.5 Up 12:20:45 - 12:36:48 -588
Madras/Culver 12:28:47 -20.9 Dark Down 48.3 210.7 Up 12:20:46 - 12:36:49 -636
Sisters 12:28:49 -21.3 Dark Down 48.8 210.3 Up 12:20:47 - 12:36:50 -650
Redmond 12:28:47 -21.0 Dark Down 48.7 210.9 Up 12:20:46 - 12:36:49 -666
Bend 12:28:48 -21.1 Dark Down 48.9 210.8 Up 12:20:47 - 12:36:50 -680
Oregon Observatory 12:28:49 -21.3 Dark Down 49.1 210.7 Up 12:20:47 - 12:36:50 -691
La Pine/Gilchrist 12:28:50 -21.3 Dark Down 49.3 210.8 Up 12:20:48 - 12:36:51 -708
North Lake 12:28:47 -20.9 Dark Down 49.4 211.9 Up 12:20:46 - 12:36:49 -767
Chiloquin 12:28:53 -21.7 Dark Down 50.4 211.0 Up 12:20:51 - 12:36:54 -795
Klamath Falls 12:28:53 -21.7 Dark Down 50.6 211.3 Up 12:20:51 - 12:36:54 -829
Paisley 12:28:47 -20.7 Dark Down 49.8 212.7 Up 12:20:46 - 12:36:49 -830
Tulelake 12:28:51 -21.5 Dark Down 50.8 211.9 Up 12:20:50 - 12:36:53 -864
Lakeview 12:28:46 -20.7 Dark Down 50.1 213.3 Up 12:20:45 - 12:36:48 -883
Cedarville 12:28:47 -20.6 Dark Down 50.6 214.0 Up 12:20:45 - 12:36:48 -949
Fall River/Burney 12:28:52 -21.6 Dark Down 51.5 212.6 Up 12:20:51 - 12:36:54 -950
Susanville 12:28:50 -21.1 Dark Down 51.7 214.1 Up 12:20:49 - 12:36:52 -1035
Greenville 12:28:53 -21.3 Dark Down 52.1 213.9 Up 12:20:51 - 12:36:54 -1050
Gimple 12:28:51 -21.3 Dark Down 52.0 214.0 Up 12:20:50 - 12:36:53 -1053
Quincy 12:28:52 -21.3 Dark Down 52.2 214.1 Up 12:20:51 - 12:36:54 -1069
Portola 12:28:50 -21.0 Dark Down 52.1 214.8 Up 12:20:49 - 12:36:52 -1097
Reno 12:28:48 -20.5 Dark Down 52.1 216.0 Up 12:20:47 - 12:36:50 -1145
Carson City 12:28:48 -20.5 Dark Down 52.3 216.3 Up 12:20:46 - 12:36:49 -1180
Gardnerville 12:28:48 -20.5 Dark Down 52.5 216.5 Up 12:20:47 - 12:36:50 -1205
Yerington 12:28:45 -20.1 Dark Down 52.2 217.3 Up 12:20:44 - 12:36:47 -1221
Hawthorne 12:28:43 -19.7 Dark Down 52.3 218.4 Up 12:20:42 - 12:36:45 -1284
Lee Vining 12:28:47 -20.1 Dark Down 53.0 218.2 Up 12:20:45 - 12:36:48 -1320
Tonopah 12:28:37 -18.6 Dark Down 52.0 220.7 Up 12:20:36 - 12:36:39 -1379
Bishop 12:28:44 -19.6 Dark Down 53.1 219.7 Up 12:20:43 - 12:36:46 -1403
Lone Pine 12:28:44 -19.3 Dark Down 53.5 220.9 Up 12:20:43 - 12:36:46 -1488
Beatty 12:28:37 -18.3 Dark Down 52.6 222.4 Up 12:20:36 - 12:36:39 -1506
CPSLO 12:28:58 -21.5 Dark Down 55.8 218.3 Up 12:20:57 - 12:37:00 -1516
Niwot 12:27:45 -9.5 NT Down 43.9 233.5 Up 12:19:44 - 12:35:47 -1564
Indian Springs 12:28:33 -17.5 AT Down 52.3 224.1 Up 12:20:32 - 12:36:35 -1576
Henderson 12:28:30 -16.9 AT Down 52.3 225.5 Up 12:20:29 - 12:36:32 -1653
Wildwood 12:28:50 -19.9 Dark Down 55.7 222.5 Up 12:20:48 - 12:36:51 -1711
Searchlight/Boulder City 12:28:31 -16.9 AT Down 52.6 226.1 Up 12:20:29 - 12:36:32 -1711
Laughlin/Bullhead City 12:28:30 -16.6 AT Down 52.6 226.9 Up 12:20:29 - 12:36:32 -1753
Patrick 12:28:27 -16.0 AT Down 52.0 227.5 Up 12:20:25 - 12:36:28 -1754
Kingman/Dolan Springs 12:28:28 -16.2 AT Down 52.3 227.5 Up 12:20:27 - 12:36:30 -1769
Mohave Valley 12:28:30 -16.6 AT Down 52.8 227.1 Up 12:20:29 - 12:36:32 -1780
DCO 12:28:24 -15.5 AT Down 51.8 228.7 Up 12:20:22 - 12:36:25 -1808
Idyllwild 12:28:42 -18.3 Dark Down 54.9 225.5 Up 12:20:40 - 12:36:43 -1816
Lake Havasu City 12:28:29 -16.4 AT Down 52.9 227.8 Up 12:20:28 - 12:36:31 -1828
Parker 12:28:30 -16.4 AT Down 53.1 228.2 Up 12:20:28 - 12:36:31 -1864
Blythe 12:28:32 -16.6 AT Down 53.7 228.4 Up 12:20:31 - 12:36:34 -1905
Calipatria 12:28:37 -17.4 AT Down 54.6 227.7 Up 12:20:36 - 12:36:39 -1920
Yuma 12:28:34 -16.6 AT Down 54.3 229.3 Up 12:20:33 - 12:36:36 -1996

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 523751, (2018/10/17 12:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 10.16 127
Bellatrix      05:25:07.8 +06:20:58  1.6  9.21 136
1Pi 3Ori       04:49:51.0 +06:57:41  3.2  0.47 128
PPM 147967     04:47:17.9 +05:47:17  6.4  1.03 127
1Pi 3Ori       04:49:51.0 +06:57:41  3.2  0.47 128
PPM 148002     04:48:44.4 +07:00:22 10.9  0.26 128
523751         04:48:05.8 +06:47:46 15.9       127
Positions are for J2000

Event circumstances last updated at 2018/10/11 06:03:20 UT

Marc W. Buie, Southwest Research Institute

RECON