RECON: TNO occultation with 182222

Event between (182222) 00YU1 and star UC4-541-012416 with event index number of 165564

Geocentric closest approach at 2018/11/27 02:41:16 UTC

J2000 position of star is 05:09:10.3 +18:07:44
Equinox of date position of star is 05:10:13.1 +18:09:03
Stellar brightness R=15.6, use SENSEUP=128
Star is 39 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 42.8 AU from the Sun and 41.9 AU from the Earth.
The TNO is moving 24.9 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 676 seconds.
The 1-sigma cross-track error in the shadow position is 2990 km.
The sky-plane scale is 30361.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=263.0 km assuming a 5% albedo -- 10.6 sec chord
Diameter=107.4 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 182222, (2018/11/27 02:41UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.5 +16:32:45  0.8  8.10  47
Alnath         05:27:29.3 +28:37:18  1.6 11.19  34
104 Tau        05:08:34.1 +18:40:09  5.6  0.66  39
PPM 120670     05:11:45.8 +17:27:44  7.7  0.78  39
PPM 120656     05:10:41.5 +17:55:51  9.4  0.24  39
PPM 120641     05:09:54.2 +18:18:27 10.4  0.18  39
182222         05:10:16.5 +18:09:07 15.6        39
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 1.3 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 02:43:42 -25.2 Dark Down 13.7 78.0 Really Low 02:28:42 - 02:58:42 6285
Tonasket 02:43:43 -25.2 Dark Down 13.6 77.9 Really Low 02:28:43 - 02:58:43 6271
Okanogan 02:43:44 -25.1 Dark Down 13.5 77.8 Really Low 02:28:44 - 02:58:44 6254
Brewster 02:43:45 -24.9 Dark Down 13.3 77.5 Really Low 02:28:45 - 02:58:45 6243
Manson/Chelan 02:43:46 -24.7 Dark Down 13.0 77.2 Really Low 02:28:46 - 02:58:46 6239
Entiat 02:43:47 -24.6 Dark Down 12.9 77.1 Really Low 02:28:47 - 02:58:47 6227
Wenatchee 02:43:47 -24.5 Dark Down 12.8 77.0 Really Low 02:28:47 - 02:58:47 6214
Ellensburg 02:43:49 -24.3 Dark Down 12.5 76.8 Really Low 02:28:49 - 02:58:49 6193
Yakima 02:43:50 -24.3 Dark Down 12.4 76.7 Really Low 02:28:50 - 02:58:50 6169
Toppenish/White Swan 02:43:51 -24.4 Dark Down 12.5 76.8 Really Low 02:28:51 - 02:58:51 6151
Goldendale 02:43:54 -24.1 Dark Down 12.1 76.4 Really Low 02:28:54 - 02:58:54 6127
The Dalles 02:43:54 -23.8 Dark Down 11.8 76.1 Really Low 02:28:54 - 02:58:54 6121
Pasco 02:43:52 -25.3 Dark Down 13.3 77.6 Really Low 02:28:52 - 02:58:52 6113
George/Umatilla 02:43:53 -25.1 Dark Down 13.1 77.4 Really Low 02:28:53 - 02:58:53 6097
PNWRO 02:43:53 -25.4 Dark Down 13.5 77.7 Really Low 02:28:53 - 02:58:53 6092
Maupin 02:43:56 -23.8 Dark Down 11.8 76.0 Really Low 02:28:56 - 02:58:56 6092
Madras/Culver 02:43:57 -23.7 Dark Down 11.6 75.9 Really Low 02:28:57 - 02:58:57 6058
Sisters 02:43:58 -23.4 Dark Down 11.2 75.6 Really Low 02:28:58 - 02:58:58 6047
Redmond 02:43:58 -23.6 Dark Down 11.5 75.8 Really Low 02:28:58 - 02:58:58 6036
Bend 02:43:59 -23.5 Dark Down 11.4 75.7 Really Low 02:28:59 - 02:58:59 6025
Oregon Observatory 02:44:00 -23.4 Dark Down 11.2 75.6 Really Low 02:29:00 - 02:59:00 6017
La Pine/Gilchrist 02:44:01 -23.3 Dark Down 11.1 75.5 Really Low 02:29:01 - 02:59:01 6005
North Lake 02:44:02 -23.7 Dark Down 11.5 75.8 Really Low 02:29:02 - 02:59:02 5961
Chiloquin 02:44:04 -22.9 Dark Down 10.6 75.1 Really Low 02:29:04 - 02:59:04 5939
Paisley 02:44:04 -23.9 Dark Down 11.6 75.9 Really Low 02:29:04 - 02:59:04 5915
Klamath Falls 02:44:05 -22.9 Dark Down 10.6 75.1 Really Low 02:29:05 - 02:59:05 5914
Tulelake 02:44:06 -23.1 Dark Down 10.7 75.2 Really Low 02:29:06 - 02:59:06 5888
Lakeview 02:44:05 -24.0 Dark Down 11.6 76.0 Really Low 02:29:05 - 02:59:05 5875
Cedarville 02:44:08 -24.0 Dark Down 11.6 75.9 Really Low 02:29:08 - 02:59:08 5825
Fall River/Burney 02:44:09 -23.1 Dark Down 10.6 75.1 Really Low 02:29:09 - 02:59:09 5823
Susanville 02:44:12 -23.5 Dark Down 11.0 75.4 Really Low 02:29:12 - 02:59:12 5760
Greenville 02:44:12 -23.3 Dark Down 10.7 75.2 Really Low 02:29:12 - 02:59:12 5748
Gimple 02:44:12 -23.3 Dark Down 10.7 75.3 Really Low 02:29:12 - 02:59:12 5745
Quincy 02:44:13 -23.3 Dark Down 10.6 75.2 Really Low 02:29:13 - 02:59:13 5733
Portola 02:44:14 -23.6 Dark Down 10.9 75.4 Really Low 02:29:14 - 02:59:14 5712
Reno 02:44:15 -24.1 Dark Down 11.4 75.8 Really Low 02:29:15 - 02:59:15 5675
Carson City 02:44:16 -24.0 Dark Down 11.3 75.7 Really Low 02:29:16 - 02:59:16 5648
Gardnerville 02:44:15 -24.0 Dark Down 11.3 75.7 Really Low 02:29:15 - 02:59:15 5629
Yerington 02:44:16 -24.5 Dark Down 11.7 76.1 Really Low 02:29:16 - 02:59:16 5617
Hawthorne 02:44:18 -24.8 Dark Down 12.0 76.3 Really Low 02:29:18 - 02:59:18 5569
Lee Vining 02:44:20 -24.4 Dark Down 11.5 75.9 Really Low 02:29:20 - 02:59:20 5540
Tonopah 02:44:19 -25.9 Dark Down 13.0 77.0 Really Low 02:29:19 - 02:59:19 5495
Bishop 02:44:21 -24.9 Dark Down 11.9 76.2 Really Low 02:29:21 - 02:59:21 5475
Lone Pine 02:44:24 -25.0 Dark Down 12.0 76.2 Really Low 02:29:24 - 02:59:24 5407
Beatty 02:44:23 -26.1 Dark Down 13.1 77.0 Really Low 02:29:23 - 02:59:23 5394
CPSLO 02:44:27 -22.8 Dark Down 9.7 74.6 Really Low 02:29:27 - 02:59:27 5380
Indian Springs 02:44:24 -26.9 Dark Down 13.9 77.5 Really Low 02:29:24 - 02:59:24 5338
Niwot 02:44:09 -35.3 Dark Down 22.5 84.8 Low 02:29:09 - 02:59:09 5316
Henderson 02:44:25 -27.4 Dark Down 14.3 77.8 Really Low 02:29:25 - 02:59:25 5277
Searchlight/Boulder City 02:44:27 -27.4 Dark Down 14.3 77.7 Really Low 02:29:27 - 02:59:27 5229
Wildwood 02:44:31 -24.2 Dark Down 11.0 75.5 Really Low 02:29:31 - 02:59:31 5226
Laughlin/Bullhead City 02:44:28 -27.7 Dark Down 14.5 77.8 Really Low 02:29:28 - 02:59:28 5196
Patrick 02:44:27 -28.3 Dark Down 15.1 78.2 Really Low 02:29:27 - 02:59:27 5195
Kingman/Dolan Springs 02:44:28 -28.1 Dark Down 14.9 78.1 Really Low 02:29:28 - 02:59:28 5182
Mohave Valley 02:44:29 -27.6 Dark Down 14.4 77.7 Really Low 02:29:29 - 02:59:29 5174
DCO 02:44:28 -28.8 Dark Down 15.6 78.5 Really Low 02:29:28 - 02:59:28 5149
Idyllwild 02:44:32 -25.7 Dark Down 12.5 76.4 Really Low 02:29:32 - 02:59:32 5143
Lake Havasu City 02:44:30 -27.8 Dark Down 14.5 77.8 Really Low 02:29:30 - 02:59:30 5134
Parker 02:44:31 -27.8 Dark Down 14.5 77.7 Really Low 02:29:31 - 02:59:31 5105
Blythe 02:44:32 -27.4 Dark Down 14.1 77.4 Really Low 02:29:32 - 02:59:32 5071
Calipatria 02:44:34 -26.6 Dark Down 13.3 76.8 Really Low 02:29:34 - 02:59:34 5058
Yuma 02:44:35 -27.3 Dark Down 13.9 77.2 Really Low 02:29:35 - 02:59:35 4996

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 182222, (2018/11/27 02:41UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  8.10  47
Alnath         05:26:17.5 +28:36:24  1.6 11.19  34
104 Tau        05:07:27.7 +18:38:43  5.6  0.66  39
PPM 120670     05:10:39.9 +17:26:24  7.7  0.78  39
PPM 120656     05:09:35.4 +17:54:29  9.4  0.24  39
PPM 120641     05:08:47.9 +18:17:04 10.4  0.18  39
182222         05:09:10.3 +18:07:44 15.6        39
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:04:26 UT

Marc W. Buie, Southwest Research Institute

RECON