RECON: TNO occultation with 523746

Event between (523746) 14UT114 and star GA1260:01057486 with event index number of 305009

Geocentric closest approach at 2018/12/19 07:30:55 UTC

J2000 position of star is 04:05:13.3 +36:29:04
Equinox of date position of star is 04:06:27.5 +36:32:04
Stellar brightness G=16.1, use SENSEUP=128
Star is 32 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 16.0 AU from the Sun and 15.1 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 6.4 arcsec/hr.
The 1-sigma error in the time of the event is 63 seconds.
The 1-sigma cross-track error in the shadow position is 692 km.
The sky-plane scale is 10954.9 km/arcsec.

The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 4.9 sec chord
Diameter=39.0 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523746, (2018/12/19 07:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:45  0.8 21.10  28
44Zet Per      03:55:19.7 +31:56:18  2.8  5.14  27
PPM 069012     04:02:29.8 +37:02:29  6.3  0.94  31
PPM 069067     04:05:48.2 +35:58:16  7.7  0.58  31
PPM 069077     04:06:13.5 +36:47:00  9.2  0.25  32
523746         04:06:28.1 +36:32:05 16.1        32
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 25.5 km RECON observability=1.0 and success probability=33.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:29:21 -63.1 Dark Up 70.6 233.8 Up 07:23:39 - 07:35:04 -386
Summerland 07:29:23 -63.0 Dark Up 70.8 233.2 Up 07:23:40 - 07:35:05 -386
Penticton 07:29:22 -63.4 Dark Up 70.9 234.3 Up 07:23:40 - 07:35:05 -423
Okanagan Falls 07:29:23 -63.6 Dark Up 71.0 234.7 Up 07:23:40 - 07:35:05 -443
Oliver 07:29:23 -63.7 Dark Up 71.1 235.1 Up 07:23:40 - 07:35:05 -461
Anarchist Mountain Observatory 07:29:22 -63.9 Dark Up 71.1 235.9 Up 07:23:39 - 07:35:04 -482
Oroville 07:29:22 -64.0 Dark Up 71.1 235.9 Up 07:23:40 - 07:35:05 -489
Tonasket 07:29:22 -64.2 Dark Up 71.3 236.5 Up 07:23:40 - 07:35:05 -515
Okanogan 07:29:23 -64.5 Dark Up 71.5 237.1 Up 07:23:41 - 07:35:06 -550
Brewster 07:29:24 -64.8 Dark Up 71.8 237.4 Up 07:23:42 - 07:35:07 -576
Manson/Chelan 07:29:26 -64.9 Dark Up 72.1 237.3 Up 07:23:43 - 07:35:08 -594
Entiat 07:29:26 -65.1 Dark Up 72.3 237.7 Up 07:23:43 - 07:35:08 -617
Wenatchee 07:29:27 -65.3 Dark Up 72.5 238.2 Up 07:23:44 - 07:35:09 -644
Ellensburg 07:29:28 -65.7 Dark Up 72.8 239.0 Up 07:23:45 - 07:35:10 -686
Yakima 07:29:28 -66.1 Dark Up 73.0 240.1 Up 07:23:45 - 07:35:10 -730
Toppenish/White Swan 07:29:28 -66.3 Dark Up 73.0 241.0 Up 07:23:45 - 07:35:10 -756
Pasco 07:29:23 -66.6 Dark Up 72.3 243.5 Up 07:23:41 - 07:35:06 -785
Goldendale 07:29:30 -66.7 Dark Up 73.5 241.8 Up 07:23:47 - 07:35:12 -810
PNWRO 07:29:22 -66.9 Dark Up 72.3 244.6 Up 07:23:40 - 07:35:05 -815
George/Umatilla 07:29:24 -66.9 Dark Up 72.6 244.1 Up 07:23:42 - 07:35:07 -819
The Dalles 07:29:31 -66.9 Dark Up 73.9 241.9 Up 07:23:49 - 07:35:14 -829
Maupin 07:29:31 -67.3 Dark Up 74.0 243.3 Up 07:23:49 - 07:35:14 -876
Madras/Culver 07:29:32 -67.8 Dark Up 74.3 245.0 Up 07:23:49 - 07:35:14 -935
Sisters 07:29:34 -68.0 Dark Up 74.7 245.3 Up 07:23:51 - 07:35:16 -965
Redmond 07:29:32 -68.1 Dark Up 74.4 246.1 Up 07:23:50 - 07:35:15 -974
Bend 07:29:33 -68.3 Dark Up 74.6 246.6 Up 07:23:50 - 07:35:15 -995
Oregon Observatory 07:29:34 -68.4 Dark Up 74.8 246.9 Up 07:23:51 - 07:35:16 -1012
La Pine/Gilchrist 07:29:34 -68.6 Dark Up 74.9 247.5 Up 07:23:52 - 07:35:17 -1033
North Lake 07:29:32 -69.2 Dark Up 74.6 250.0 Up 07:23:50 - 07:35:15 -1090
Chiloquin 07:29:37 -69.5 Dark Up 75.5 250.9 Up 07:23:54 - 07:35:19 -1149
Paisley 07:29:31 -69.8 Dark Up 74.6 252.4 Up 07:23:49 - 07:35:14 -1155
Klamath Falls 07:29:37 -69.9 Dark Up 75.6 252.3 Up 07:23:54 - 07:35:19 -1188
Lakeview 07:29:31 -70.3 Dark Up 74.6 254.5 Up 07:23:49 - 07:35:14 -1213
Tulelake 07:29:36 -70.2 Dark Up 75.4 253.7 Up 07:23:53 - 07:35:18 -1222
Cedarville 07:29:31 -71.0 Dark Up 74.6 257.0 Up 07:23:49 - 07:35:14 -1288
Fall River/Burney 07:29:36 -71.1 Dark Up 75.6 257.2 Up 07:23:54 - 07:35:19 -1322
Susanville 07:29:34 -71.9 Dark Up 75.2 260.5 Up 07:23:52 - 07:35:17 -1402
Greenville 07:29:35 -72.0 Dark Up 75.4 261.2 Up 07:23:53 - 07:35:18 -1428
Gimple 07:29:35 -72.1 Dark Up 75.4 261.3 Up 07:23:53 - 07:35:18 -1430
Quincy 07:29:35 -72.2 Dark Up 75.5 262.0 Up 07:23:53 - 07:35:18 -1450
Portola 07:29:34 -72.5 Dark Up 75.1 262.9 Up 07:23:51 - 07:35:16 -1471
Reno 07:29:31 -72.9 Dark Up 74.7 264.5 Up 07:23:49 - 07:35:14 -1510
Carson City 07:29:31 -73.2 Dark Up 74.7 265.9 Up 07:23:49 - 07:35:14 -1550
Niwot 07:28:33 -72.1 Dark Up 63.6 273.0 Up 07:22:51 - 07:34:16 -1558
Gardnerville 07:29:31 -73.5 Dark Up 74.7 266.8 Up 07:23:49 - 07:35:14 -1577
Yerington 07:29:29 -73.6 Dark Up 74.2 267.1 Up 07:23:47 - 07:35:12 -1580
Hawthorne 07:29:28 -74.2 Dark Up 73.8 269.1 Up 07:23:45 - 07:35:10 -1638
Lee Vining 07:29:30 -74.6 Dark Up 74.2 270.7 Up 07:23:47 - 07:35:12 -1693
Tonopah 07:29:22 -74.9 Dark Up 72.7 271.5 Up 07:23:39 - 07:35:04 -1708
Bishop 07:29:28 -75.3 Dark Up 73.6 273.2 Up 07:23:45 - 07:35:10 -1769
Beatty 07:29:21 -76.1 Dark Up 72.3 275.3 Up 07:23:38 - 07:35:03 -1840
Lone Pine 07:29:27 -76.1 Dark Up 73.3 275.9 Up 07:23:45 - 07:35:10 -1857
Indian Springs 07:29:17 -76.6 Dark Up 71.4 276.7 Up 07:23:34 - 07:34:59 -1889
Henderson 07:29:14 -77.3 Dark Up 70.8 278.4 Up 07:23:31 - 07:34:56 -1955
CPSLO 07:29:39 -76.4 Dark Up 75.2 279.9 Up 07:23:56 - 07:35:21 -1960
Searchlight/Boulder City 07:29:14 -77.8 Dark Up 70.6 280.1 Up 07:23:32 - 07:34:57 -2019
Patrick 07:29:10 -78.0 Dark Up 69.8 280.4 Up 07:23:28 - 07:34:53 -2035
Laughlin/Bullhead City 07:29:13 -78.2 Dark Up 70.3 280.9 Up 07:23:31 - 07:34:56 -2055
Kingman/Dolan Springs 07:29:11 -78.2 Dark Up 69.9 281.0 Up 07:23:28 - 07:34:53 -2057
DCO 07:29:07 -78.3 Dark Up 69.2 281.3 Up 07:23:25 - 07:34:50 -2075
Mohave Valley 07:29:13 -78.4 Dark Up 70.3 281.7 Up 07:23:31 - 07:34:56 -2085
Wildwood 07:29:31 -78.3 Dark Up 73.3 284.0 Up 07:23:49 - 07:35:14 -2123
Lake Havasu City 07:29:13 -78.9 Dark Up 70.0 282.8 Up 07:23:30 - 07:34:55 -2131
Parker 07:29:13 -79.2 Dark Up 69.9 283.7 Up 07:23:31 - 07:34:56 -2170
Idyllwild 07:29:24 -79.2 Dark Up 71.7 284.9 Up 07:23:41 - 07:35:06 -2187
Blythe 07:29:15 -79.7 Dark Up 70.0 285.1 Up 07:23:32 - 07:34:57 -2224
Calipatria 07:29:19 -80.1 Dark Up 70.6 286.5 Up 07:23:36 - 07:35:01 -2268
Yuma 07:29:15 -80.6 Dark Up 69.7 287.6 Up 07:23:33 - 07:34:58 -2325

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 523746, (2018/12/19 07:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 21.10  28
44Zet Per      03:54:07.9 +31:53:01  2.8  5.14  27
PPM 069012     04:01:14.8 +36:59:22  6.3  0.94  31
PPM 069067     04:04:33.8 +35:55:14  7.7  0.58  31
PPM 069077     04:04:58.6 +36:43:58  9.2  0.25  32
523746         04:05:13.3 +36:29:04 16.1        32
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:08:56 UT

Marc W. Buie, Southwest Research Institute

RECON