RECON: TNO occultation with 469361

Event between (469361) 01HY65 and star GA0840:04415780 with event index number of 1252087

Geocentric closest approach at 2023/06/20 07:23:50 UTC

J2000 position of star is 14:21:16.7 -05:17:22
Equinox of date position of star is 14:22:17.8 -05:22:39
Stellar brightness G=15.0, use SENSEUP=128
Star is 101 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 41.2 AU from the Sun and 40.6 AU from the Earth.
The TNO is moving 13.1 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 877 seconds.
The 1-sigma cross-track error in the shadow position is 5681 km.
The sky-plane scale is 29447.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 26.4 sec chord
Diameter=141.6 km assuming a 30% albedo -- 10.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 469361, (2023/06/20 07:24UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:26.0 -11:16:59  1.0 15.06  91
27Bet Lib      15:18:16.4 -09:28:05  2.6 14.41 116
99Iot Vir      14:17:14.9 -06:06:40  4.1  1.49 100
PPM 197455     14:22:33.2 -05:19:20  7.9  0.07 101
PPM 197456     14:22:34.7 -05:26:33  9.3  0.05 101
469361         14:22:30.5 -05:23:45 15.0       102
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 1.0 sigma about the mid-time.
The median site spacing is 15.6 km RECON observability=1.0 and success probability=5.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:21:21 -16.2 AT Down 23.1 228.6 Low 07:06:21 - 07:36:21 -1150
Summerland 07:21:20 -16.5 AT Down 23.4 228.4 Low 07:06:20 - 07:36:20 -1167
Penticton 07:21:20 -16.5 AT Down 23.4 228.6 Low 07:06:20 - 07:36:20 -1170
Okanagan Falls 07:21:19 -16.7 AT Down 23.5 228.6 Low 07:06:19 - 07:36:19 -1181
Oliver 07:21:17 -16.9 AT Down 23.6 228.7 Low 07:06:17 - 07:36:17 -1190
Anarchist Mountain Observatory 07:21:16 -17.1 AT Down 23.6 228.9 Low 07:06:16 - 07:36:16 -1199
Oroville 07:21:16 -17.1 AT Down 23.7 228.9 Low 07:06:16 - 07:36:16 -1203
Tonasket 07:21:15 -17.4 AT Down 23.9 228.9 Low 07:06:15 - 07:36:15 -1217
Okanogan 07:21:13 -17.7 AT Down 24.2 228.9 Low 07:06:13 - 07:36:13 -1236
Brewster 07:21:13 -17.9 AT Down 24.5 228.8 Low 07:06:13 - 07:36:13 -1253
Manson/Chelan 07:21:14 -18.1 Dark Down 24.8 228.5 Low 07:06:14 - 07:36:14 -1267
Entiat 07:21:13 -18.3 Dark Down 25.0 228.5 Low 07:06:13 - 07:36:13 -1280
Wenatchee 07:21:12 -18.5 Dark Down 25.2 228.5 Low 07:06:12 - 07:36:12 -1295
Ellensburg 07:21:11 -18.9 Dark Down 25.6 228.5 Low 07:06:11 - 07:36:11 -1321
Yakima 07:21:09 -19.3 Dark Down 25.9 228.6 Low 07:06:09 - 07:36:09 -1345
Toppenish/White Swan 07:21:07 -19.5 Dark Down 25.9 228.8 Low 07:06:07 - 07:36:07 -1358
Pasco 07:21:02 -19.8 Dark Down 25.3 230.0 Low 07:06:02 - 07:36:02 -1360
PNWRO 07:20:59 -20.1 Dark Down 25.4 230.3 Low 07:05:59 - 07:35:59 -1374
George/Umatilla 07:21:01 -20.1 Dark Down 25.7 229.9 Low 07:06:01 - 07:36:01 -1381
Goldendale 07:21:07 -20.0 Dark Down 26.5 228.6 Low 07:06:07 - 07:36:07 -1394
The Dalles 07:21:07 -20.2 Dark Down 26.9 228.3 Low 07:06:07 - 07:36:07 -1409
Maupin 07:21:04 -20.6 Dark Down 27.1 228.6 Low 07:06:04 - 07:36:04 -1435
Madras/Culver 07:21:02 -21.2 Dark Down 27.5 228.8 Low 07:06:02 - 07:36:02 -1470
Redmond 07:21:01 -21.5 Dark Down 27.7 228.8 Low 07:06:01 - 07:36:01 -1493
Sisters 07:21:02 -21.4 Dark Down 27.9 228.5 Low 07:06:02 - 07:36:02 -1493
Bend 07:21:00 -21.7 Dark Down 28.0 228.8 Low 07:06:00 - 07:36:00 -1507
Oregon Observatory 07:21:00 -21.9 Dark Down 28.1 228.7 Low 07:06:00 - 07:36:00 -1519
La Pine/Gilchrist 07:20:59 -22.0 Dark Down 28.3 228.8 Low 07:05:59 - 07:35:59 -1533
North Lake 07:20:55 -22.6 Dark Down 28.3 229.5 Low 07:05:55 - 07:35:55 -1558
Paisley 07:20:51 -23.1 Dark Down 28.4 230.0 Low 07:05:51 - 07:35:51 -1593
Chiloquin 07:20:55 -23.1 Dark Down 29.2 228.9 Low 07:05:55 - 07:35:55 -1608
Lakeview 07:20:47 -23.7 Dark Down 28.7 230.4 Low 07:05:47 - 07:35:47 -1626
Klamath Falls 07:20:54 -23.4 Dark Down 29.4 229.1 Low 07:05:54 - 07:35:54 -1631
Tulelake 07:20:52 -23.7 Dark Down 29.4 229.5 Low 07:05:52 - 07:35:52 -1647
Cedarville 07:20:43 -24.3 Dark Down 29.0 230.8 Low 07:05:43 - 07:35:43 -1670
Fall River/Burney 07:20:46 -24.6 Dark Down 30.0 229.9 Low 07:05:46 - 07:35:46 -1709
Niwot 07:19:35 -26.3 Dark Down 20.4 243.8 Low 07:04:35 - 07:34:35 -1723
SwRI 07:19:35 -26.4 Dark Down 20.5 243.8 Low 07:04:35 - 07:34:35 -1730
Susanville 07:20:40 -25.4 Dark Down 30.0 230.9 Low 07:05:40 - 07:35:40 -1749
Gimple 07:20:40 -25.6 Dark Down 30.3 230.8 Up 07:05:40 - 07:35:40 -1770
Greenville 07:20:40 -25.6 Dark Down 30.3 230.7 Up 07:05:40 - 07:35:40 -1770
Quincy 07:20:40 -25.8 Dark Down 30.5 230.8 Up 07:05:40 - 07:35:40 -1784
Portola 07:20:37 -26.0 Dark Down 30.3 231.3 Up 07:05:37 - 07:35:37 -1791
Reno 07:20:32 -26.3 Dark Down 30.0 232.0 Up 07:05:32 - 07:35:32 -1807
Carson City 07:20:31 -26.7 Dark Down 30.2 232.2 Up 07:05:31 - 07:35:31 -1832
Yerington 07:20:27 -27.0 Dark Down 30.0 232.8 Low 07:05:27 - 07:35:27 -1843
Gardnerville 07:20:29 -26.9 Dark Down 30.4 232.3 Up 07:05:29 - 07:35:29 -1850
Hawthorne 07:20:22 -27.5 Dark Down 29.9 233.5 Low 07:05:22 - 07:35:22 -1874
Tonopah 07:20:14 -28.1 Dark Down 29.3 234.9 Low 07:05:14 - 07:35:14 -1902
Lee Vining 07:20:22 -28.0 Dark Down 30.6 233.3 Up 07:05:22 - 07:35:22 -1918
Bishop 07:20:16 -28.7 Dark Down 30.5 234.2 Up 07:05:16 - 07:35:16 -1958
Beatty 07:20:06 -29.3 Dark Down 29.7 235.8 Low 07:05:06 - 07:35:06 -1986
Indian Springs 07:20:00 -29.7 Dark Down 29.2 236.9 Low 07:05:00 - 07:35:00 -2006
Lone Pine 07:20:11 -29.4 Dark Down 30.7 234.9 Up 07:05:11 - 07:35:11 -2014
Henderson 07:19:54 -30.3 Dark Down 29.0 237.7 Low 07:04:54 - 07:34:54 -2043
Searchlight/Boulder City 07:19:51 -30.9 Dark Down 29.3 238.0 Low 07:04:51 - 07:34:51 -2087
Patrick 07:19:46 -31.0 Dark Down 28.6 238.9 Low 07:04:46 - 07:34:46 -2087
Kingman/Dolan Springs 07:19:46 -31.2 Dark Down 28.9 238.8 Low 07:04:46 - 07:34:46 -2105
DCO 07:19:42 -31.4 Dark Down 28.3 239.6 Low 07:04:42 - 07:34:42 -2108
Laughlin/Bullhead City 07:19:48 -31.2 Dark Down 29.2 238.4 Low 07:04:48 - 07:34:48 -2108
CPSLO 07:20:18 -30.4 Dark Down 33.2 233.3 Up 07:05:18 - 07:35:18 -2126
Mohave Valley 07:19:47 -31.5 Dark Down 29.4 238.6 Low 07:04:47 - 07:34:47 -2130
Lake Havasu City 07:19:44 -31.9 Dark Down 29.4 239.0 Low 07:04:44 - 07:34:44 -2160
Parker 07:19:42 -32.2 Dark Down 29.6 239.1 Low 07:04:42 - 07:34:42 -2187
Wildwood 07:20:02 -31.8 Dark Down 32.6 235.7 Up 07:05:02 - 07:35:02 -2210
Idyllwild 07:19:52 -32.4 Dark Down 31.5 237.4 Up 07:04:52 - 07:34:52 -2230
Blythe 07:19:42 -32.7 Dark Down 30.1 239.2 Up 07:04:42 - 07:34:42 -2230
Calipatria 07:19:43 -33.2 Dark Down 31.0 238.7 Up 07:04:43 - 07:34:43 -2273
Yuma 07:19:37 -33.7 Dark Down 30.6 239.6 Up 07:04:37 - 07:34:37 -2304

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 469361, (2023/06/20 07:24UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 15.06  91
27Bet Lib      15:17:00.3 -09:22:59  2.6 14.41 116
99Iot Vir      14:16:00.9 -06:00:10  4.1  1.49 100
PPM 197455     14:21:19.3 -05:12:57  7.9  0.07 101
PPM 197456     14:21:20.8 -05:20:10  9.3  0.05 101
469361         14:21:16.7 -05:17:22 15.0       101
Positions are for J2000

Event circumstances last updated at 2019/06/08 05:25:01 UT

Marc W. Buie, Southwest Research Institute

RECON