RECON: TNO occultation with 447178

Event between (447178) 05RO43 and star GA0740:01850147 with event index number of 1298947

Geocentric closest approach at 2023/11/09 12:17:35 UTC

J2000 position of star is 07:05:52.8 -14:06:28
Equinox of date position of star is 07:06:46.3 -14:08:19
Stellar brightness G=12.6, use SENSEUP=16
Star is 77 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=19.6

[RECON map]
TNO is 16.5 AU from the Sun and 16.2 AU from the Earth.
The TNO is moving 16.6 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 185 seconds.
The 1-sigma cross-track error in the shadow position is 4880 km.
The sky-plane scale is 11715.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=229.1 km assuming a 5% albedo -- 13.2 sec chord
Diameter=93.5 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 447178, (2023/11/09 12:18UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:12.1 -16:44:56 -1.5  5.64  82
2Bet CMa       06:23:45.0 -17:58:10  2.0 11.06  88
23Gam CMa      07:04:50.3 -15:40:12  4.1  1.61  78
PPM 218114     07:06:07.2 -14:00:17  8.0  0.25  77
PPM 218157     07:07:31.6 -13:58:01  9.4  0.22  77
447178         07:06:58.5 -14:08:44 12.6        77
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 4.9 sigma about the mid-time.
The median site spacing is 7.4 km RECON observability=1.0 and success probability=8.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 12:12:19 -27.3 Dark Up 26.1 185.8 Low 11:57:19 - 12:27:19 -95
Penticton 12:12:19 -27.2 Dark Up 26.2 185.9 Low 11:57:19 - 12:27:19 -104
Kelowna 12:12:18 -27.1 Dark Up 25.8 186.1 Low 11:57:18 - 12:27:18 -105
Okanagan Falls 12:12:20 -27.3 Dark Up 26.4 185.9 Low 11:57:20 - 12:27:20 -109
The Dalles 12:12:33 -28.7 Dark Up 30.2 184.4 Up 11:57:33 - 12:27:33 -115
Manson/Chelan 12:12:25 -27.8 Dark Up 27.9 185.4 Low 11:57:25 - 12:27:25 -115
Oliver 12:12:20 -27.3 Dark Up 26.5 185.9 Low 11:57:20 - 12:27:20 -115
Ellensburg 12:12:28 -28.1 Dark Up 28.8 185.0 Low 11:57:28 - 12:27:28 -116
Entiat 12:12:25 -27.8 Dark Up 28.1 185.3 Low 11:57:25 - 12:27:25 -117
Wenatchee 12:12:26 -27.9 Dark Up 28.3 185.2 Low 11:57:26 - 12:27:26 -118
Yakima 12:12:29 -28.2 Dark Up 29.2 185.0 Low 11:57:29 - 12:27:29 -127
Sisters 12:12:37 -29.0 Dark Up 31.5 184.0 Up 11:57:37 - 12:27:37 -128
Oroville 12:12:21 -27.2 Dark Up 26.8 186.1 Low 11:57:21 - 12:27:21 -130
Anarchist Mountain Observatory 12:12:20 -27.2 Dark Up 26.7 186.2 Low 11:57:20 - 12:27:20 -133
Brewster 12:12:23 -27.5 Dark Up 27.6 185.8 Low 11:57:23 - 12:27:23 -133
Goldendale 12:12:31 -28.4 Dark Up 29.9 184.8 Low 11:57:31 - 12:27:31 -133
Maupin 12:12:34 -28.6 Dark Up 30.6 184.5 Up 11:57:34 - 12:27:34 -135
Tonasket 12:12:21 -27.2 Dark Up 27.0 186.1 Low 11:57:21 - 12:27:21 -138
Okanogan 12:12:22 -27.4 Dark Up 27.3 186.0 Low 11:57:22 - 12:27:22 -138
Toppenish/White Swan 12:12:29 -28.1 Dark Up 29.4 185.2 Low 11:57:29 - 12:27:29 -145
Madras/Culver 12:12:35 -28.7 Dark Up 31.2 184.5 Up 11:57:35 - 12:27:35 -149
Oregon Observatory 12:12:38 -29.0 Dark Up 31.9 184.2 Up 11:57:38 - 12:27:38 -150
La Pine/Gilchrist 12:12:39 -29.0 Dark Up 32.1 184.1 Up 11:57:39 - 12:27:39 -152
Bend 12:12:38 -28.9 Dark Up 31.7 184.3 Up 11:57:38 - 12:27:38 -154
Redmond 12:12:37 -28.7 Dark Up 31.5 184.5 Up 11:57:37 - 12:27:37 -157
Chiloquin 12:12:43 -29.3 Dark Up 33.2 183.8 Up 11:57:43 - 12:27:43 -162
Klamath Falls 12:12:44 -29.3 Dark Up 33.6 183.9 Up 11:57:44 - 12:27:44 -179
North Lake 12:12:39 -28.6 Dark Up 32.5 184.8 Up 11:57:39 - 12:27:39 -210
Tulelake 12:12:44 -29.1 Dark Up 33.8 184.3 Up 11:57:44 - 12:27:44 -210
George/Umatilla 12:12:28 -27.4 Dark Up 29.8 186.4 Low 11:57:28 - 12:27:28 -232
Pasco 12:12:27 -27.2 Dark Up 29.4 186.6 Low 11:57:27 - 12:27:27 -236
Fall River/Burney 12:12:47 -29.1 Dark Up 34.7 184.4 Up 11:57:47 - 12:27:47 -246
Paisley 12:12:40 -28.4 Dark Up 33.0 185.3 Up 11:57:40 - 12:27:40 -254
PNWRO 12:12:27 -27.0 Dark Up 29.6 186.9 Low 11:57:27 - 12:27:27 -260
Lakeview 12:12:41 -28.2 Dark Up 33.5 185.5 Up 11:57:41 - 12:27:41 -285
Greenville 12:12:49 -28.7 Dark Up 35.6 185.0 Up 11:57:49 - 12:27:49 -311
Gimple 12:12:49 -28.7 Dark Up 35.6 185.1 Up 11:57:49 - 12:27:49 -318
Quincy 12:12:50 -28.7 Dark Up 35.8 185.0 Up 11:57:50 - 12:27:50 -319
Cedarville 12:12:43 -28.1 Dark Up 34.2 185.8 Up 11:57:43 - 12:27:43 -321
Susanville 12:12:47 -28.5 Dark Up 35.3 185.3 Up 11:57:47 - 12:27:47 -324
Portola 12:12:49 -28.4 Dark Up 35.9 185.6 Up 11:57:49 - 12:27:49 -359
Reno 12:12:48 -27.9 Dark Up 36.1 186.4 Up 11:57:48 - 12:27:48 -419
Carson City 12:12:49 -27.9 Dark Up 36.5 186.5 Up 11:57:49 - 12:27:49 -433
Gardnerville 12:12:50 -27.8 Dark Up 36.7 186.5 Up 11:57:50 - 12:27:50 -446
Yerington 12:12:49 -27.4 Dark Up 36.6 187.2 Up 11:57:49 - 12:27:49 -490
CPSLO 12:13:05 -28.5 Dark Up 40.4 185.8 Up 11:58:05 - 12:28:05 -511
Lee Vining 12:12:52 -27.3 Dark Up 37.6 187.4 Up 11:57:52 - 12:27:52 -532
Hawthorne 12:12:49 -27.0 Dark Up 37.0 187.9 Up 11:57:49 - 12:27:49 -548
Bishop 12:12:52 -26.8 Dark Up 38.1 188.4 Up 11:57:52 - 12:27:52 -612
Lone Pine 12:12:54 -26.5 Dark Up 38.8 188.9 Up 11:57:54 - 12:27:54 -669
Tonopah 12:12:47 -25.9 Dark Up 37.3 189.7 Up 11:57:47 - 12:27:47 -677
Wildwood 12:13:05 -26.8 Dark Up 41.4 188.6 Up 11:58:05 - 12:28:05 -727
Beatty 12:12:50 -25.4 Dark Up 38.4 190.4 Up 11:57:50 - 12:27:50 -760
Indian Springs 12:12:48 -24.6 Dark Up 38.5 191.8 Up 11:57:48 - 12:27:48 -859
Idyllwild 12:13:01 -25.2 Dark Up 41.5 191.0 Up 11:58:01 - 12:28:01 -897
Henderson 12:12:49 -24.0 Dark Up 38.9 192.7 Up 11:57:49 - 12:27:49 -938
Searchlight/Boulder City 12:12:51 -23.9 Dark Up 39.5 192.9 Up 11:57:51 - 12:27:51 -968
Laughlin/Bullhead City 12:12:51 -23.6 Dark Up 39.7 193.4 Up 11:57:51 - 12:27:51 -1009
Mohave Valley 12:12:52 -23.5 Dark Up 40.0 193.5 Up 11:57:52 - 12:27:52 -1022
Calipatria 12:13:00 -24.1 Dark Up 41.9 192.6 Up 11:58:00 - 12:28:00 -1022
Kingman/Dolan Springs 12:12:50 -23.1 Dark Up 39.6 194.0 Up 11:57:50 - 12:27:50 -1050
Patrick 12:12:48 -23.0 Dark Up 39.3 194.2 Up 11:57:48 - 12:27:48 -1055
Lake Havasu City 12:12:53 -23.3 Dark Up 40.3 193.8 Up 11:57:53 - 12:27:53 -1060
Blythe 12:12:57 -23.4 Dark Up 41.2 193.7 Up 11:57:57 - 12:27:57 -1077
Parker 12:12:54 -23.2 Dark Up 40.7 194.0 Up 11:57:54 - 12:27:54 -1078
Yuma 12:13:00 -23.4 Dark Up 42.1 193.9 Up 11:58:00 - 12:28:00 -1116
DCO 12:12:48 -22.4 Dark Up 39.5 195.1 Up 11:57:48 - 12:27:48 -1127
SwRI 12:12:16 -16.9 AT Up 32.9 203.0 Up 11:57:16 - 12:27:16 -1501
Niwot 12:12:16 -16.8 AT Up 32.7 203.0 Up 11:57:16 - 12:27:16 -1502

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 447178, (2023/11/09 12:18UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.1 -16:43:21 -1.5  5.64  82
2Bet CMa       06:22:42.0 -17:57:21  2.0 11.06  88
23Gam CMa      07:03:45.5 -15:38:00  4.1  1.61  78
PPM 218114     07:05:01.4 -13:58:02  8.0  0.25  77
PPM 218157     07:06:25.8 -13:55:43  9.4  0.22  77
447178         07:05:52.8 -14:06:28 12.6        77
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:09:02 UT

Marc W. Buie, Southwest Research Institute

RECON