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 05:10:11.4 +18:09:01
Stellar brightness R=15.6, use SENSEUP=128
Star is 39 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=23.3

[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 594 seconds.
The 1-sigma cross-track error in the shadow position is 2723 km.
The sky-plane scale is 30361.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 9.6 sec chord
Diameter=97.9 km assuming a 30% albedo -- 3.9 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 1.5 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 6279
Tonasket 02:43:43 -25.2 Dark Down 13.6 77.9 Really Low 02:28:43 - 02:58:43 6265
Okanogan 02:43:44 -25.1 Dark Down 13.5 77.8 Really Low 02:28:44 - 02:58:44 6248
Brewster 02:43:45 -24.9 Dark Down 13.3 77.5 Really Low 02:28:45 - 02:58:45 6236
Manson/Chelan 02:43:46 -24.7 Dark Down 13.0 77.2 Really Low 02:28:46 - 02:58:46 6232
Entiat 02:43:46 -24.6 Dark Down 12.9 77.1 Really Low 02:28:46 - 02:58:46 6220
Wenatchee 02:43:47 -24.5 Dark Down 12.8 77.0 Really Low 02:28:47 - 02:58:47 6207
Ellensburg 02:43:49 -24.3 Dark Down 12.5 76.8 Really Low 02:28:49 - 02:58:49 6187
Yakima 02:43:50 -24.3 Dark Down 12.4 76.7 Really Low 02:28:50 - 02:58:50 6162
Toppenish/White Swan 02:43:52 -24.4 Dark Down 12.5 76.8 Really Low 02:28:52 - 02:58:52 6145
Goldendale 02:43:54 -24.1 Dark Down 12.1 76.4 Really Low 02:28:54 - 02:58:54 6120
The Dalles 02:43:53 -23.8 Dark Down 11.8 76.1 Really Low 02:28:53 - 02:58:53 6114
Pasco 02:43:51 -25.3 Dark Down 13.3 77.6 Really Low 02:28:51 - 02:58:51 6107
George/Umatilla 02:43:53 -25.1 Dark Down 13.1 77.4 Really Low 02:28:53 - 02:58:53 6091
PNWRO 02:43:53 -25.4 Dark Down 13.4 77.7 Really Low 02:28:53 - 02:58:53 6086
Maupin 02:43:55 -23.8 Dark Down 11.8 76.0 Really Low 02:28:55 - 02:58:55 6085
Madras/Culver 02:43:57 -23.7 Dark Down 11.6 75.9 Really Low 02:28:57 - 02:58:57 6051
Sisters 02:43:59 -23.4 Dark Down 11.2 75.6 Really Low 02:28:59 - 02:58:59 6041
Redmond 02:43:58 -23.6 Dark Down 11.5 75.8 Really Low 02:28:58 - 02:58:58 6029
Bend 02:44:00 -23.5 Dark Down 11.4 75.7 Really Low 02:29:00 - 02:59:00 6019
Oregon Observatory 02:44:00 -23.4 Dark Down 11.2 75.6 Really Low 02:29:00 - 02:59:00 6011
La Pine/Gilchrist 02:44:01 -23.3 Dark Down 11.1 75.5 Really Low 02:29:01 - 02:59:01 5999
North Lake 02:44:03 -23.7 Dark Down 11.5 75.8 Really Low 02:29:03 - 02:59:03 5955
Chiloquin 02:44:04 -22.9 Dark Down 10.6 75.1 Really Low 02:29:04 - 02:59:04 5933
Paisley 02:44:04 -23.9 Dark Down 11.6 75.9 Really Low 02:29:04 - 02:59:04 5909
Klamath Falls 02:44:06 -23.0 Dark Down 10.6 75.1 Really Low 02:29:06 - 02:59:06 5908
Tulelake 02:44:06 -23.1 Dark Down 10.7 75.2 Really Low 02:29:06 - 02:59:06 5882
Lakeview 02:44:06 -24.0 Dark Down 11.6 76.0 Really Low 02:29:06 - 02:59:06 5869
Cedarville 02:44:09 -24.1 Dark Down 11.6 75.9 Really Low 02:29:09 - 02:59:09 5819
Fall River/Burney 02:44:10 -23.1 Dark Down 10.6 75.1 Really Low 02:29:10 - 02:59:10 5817
Susanville 02:44:12 -23.5 Dark Down 11.0 75.4 Really Low 02:29:12 - 02:59:12 5753
Greenville 02:44:13 -23.3 Dark Down 10.7 75.2 Really Low 02:29:13 - 02:59:13 5741
Gimple 02:44:12 -23.3 Dark Down 10.7 75.3 Really Low 02:29:12 - 02:59:12 5739
Quincy 02:44:13 -23.3 Dark Down 10.6 75.2 Really Low 02:29:13 - 02:59:13 5726
Portola 02:44:14 -23.6 Dark Down 10.9 75.4 Really Low 02:29:14 - 02:59:14 5705
Reno 02:44:14 -24.1 Dark Down 11.4 75.8 Really Low 02:29:14 - 02:59:14 5669
Carson City 02:44:16 -24.0 Dark Down 11.3 75.7 Really Low 02:29:16 - 02:59:16 5642
Gardnerville 02:44:16 -24.0 Dark Down 11.3 75.7 Really Low 02:29:16 - 02:59:16 5623
Yerington 02:44:16 -24.5 Dark Down 11.7 76.1 Really Low 02:29:16 - 02:59:16 5611
Hawthorne 02:44:17 -24.8 Dark Down 12.0 76.3 Really Low 02:29:17 - 02:59:17 5562
Lee Vining 02:44:19 -24.4 Dark Down 11.5 75.9 Really Low 02:29:19 - 02:59:19 5533
Tonopah 02:44:19 -25.9 Dark Down 13.0 77.0 Really Low 02:29:19 - 02:59:19 5488
Bishop 02:44:21 -24.9 Dark Down 11.9 76.2 Really Low 02:29:21 - 02:59:21 5468
Lone Pine 02:44:24 -25.0 Dark Down 12.0 76.2 Really Low 02:29:24 - 02:59:24 5400
Beatty 02:44:23 -26.1 Dark Down 13.1 77.0 Really Low 02:29:23 - 02:59:23 5387
CPSLO 02:44:28 -22.8 Dark Down 9.7 74.6 Really Low 02:29:28 - 02:59:28 5372
Indian Springs 02:44:23 -26.9 Dark Down 13.9 77.5 Really Low 02:29:23 - 02:59:23 5331
Niwot 02:44:08 -35.3 Dark Down 22.5 84.8 Low 02:29:08 - 02:59:08 5309
Henderson 02:44:25 -27.4 Dark Down 14.3 77.8 Really Low 02:29:25 - 02:59:25 5269
Searchlight/Boulder City 02:44:27 -27.4 Dark Down 14.3 77.7 Really Low 02:29:27 - 02:59:27 5222
Wildwood 02:44:31 -24.2 Dark Down 11.0 75.5 Really Low 02:29:31 - 02:59:31 5218
Laughlin/Bullhead City 02:44:28 -27.7 Dark Down 14.5 77.8 Really Low 02:29:28 - 02:59:28 5187
Patrick 02:44:27 -28.3 Dark Down 15.1 78.2 Really Low 02:29:27 - 02:59:27 5187
Kingman/Dolan Springs 02:44:28 -28.1 Dark Down 14.9 78.1 Really Low 02:29:28 - 02:59:28 5175
Mohave Valley 02:44:29 -27.6 Dark Down 14.4 77.7 Really Low 02:29:29 - 02:59:29 5165
DCO 02:44:28 -28.8 Dark Down 15.6 78.5 Really Low 02:29:28 - 02:59:28 5142
Idyllwild 02:44:33 -25.7 Dark Down 12.5 76.4 Really Low 02:29:33 - 02:59:33 5135
Lake Havasu City 02:44:30 -27.8 Dark Down 14.5 77.8 Really Low 02:29:30 - 02:59:30 5126
Parker 02:44:30 -27.8 Dark Down 14.5 77.7 Really Low 02:29:30 - 02:59:30 5096
Blythe 02:44:33 -27.4 Dark Down 14.1 77.4 Really Low 02:29:33 - 02:59:33 5062
Calipatria 02:44:34 -26.6 Dark Down 13.3 76.8 Really Low 02:29:34 - 02:59:34 5050
Yuma 02:44:35 -27.3 Dark Down 13.9 77.2 Really Low 02:29:35 - 02:59:35 4987

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        05:07:27.6 +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 2017/06/14 17:02:49 UT

Marc W. Buie, Southwest Research Institute

RECON