RECON: TNO occultation with 450265

Event between (450265) 03WU172 and star GA1140:02927253 with event index number of 1231044

Geocentric closest approach at 2023/02/12 06:17:30 UTC

J2000 position of star is 07:45:25.0 +25:26:15
Equinox of date position of star is 07:46:38.6 +25:23:14
Stellar brightness G=15.7, use SENSEUP=128
Star is 103 degrees from the moon. Moon is 65% illuminated.
TNO apparent brightness V=24.7

[RECON map]
TNO is 29.2 AU from the Sun and 28.3 AU from the Earth.
The TNO is moving 20.3 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 246 seconds.
The 1-sigma cross-track error in the shadow position is 1495 km.
The sky-plane scale is 20539.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=363.1 km assuming a 5% albedo -- 3.0 sec chord
Diameter=148.2 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 450265, (2023/02/12 06:17UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:43.8 +27:58:07  1.1  2.59 103
77Kap Gem      07:45:50.4 +24:20:26  3.6  1.06 103
76 Gem         07:45:31.3 +25:43:38  6.6  0.45 103
450265         07:46:49.2 +25:22:48 15.7       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 3.7 sigma about the mid-time.
The median site spacing is 24.5 km RECON observability=1.0 and success probability=21.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 06:17:44 -46.8 Dark Down 65.2 181.8 Up 06:02:44 - 06:32:44 2856
Kelowna 06:17:44 -47.0 Dark Down 65.6 181.4 Up 06:02:44 - 06:32:44 2815
Peachland 06:17:45 -47.0 Dark Down 65.7 180.8 Up 06:02:45 - 06:32:45 2802
Summerland 06:17:45 -47.1 Dark Down 65.8 181.0 Up 06:02:45 - 06:32:45 2787
Penticton 06:17:44 -47.2 Dark Down 65.9 181.3 Up 06:02:44 - 06:32:44 2782
Oliver 06:17:44 -47.5 Dark Down 66.3 181.3 Up 06:02:44 - 06:32:44 2746
Anarchist Mountain Observatory 06:17:43 -47.7 Dark Down 66.4 181.7 Up 06:02:43 - 06:32:43 2731
Tonasket 06:17:43 -47.9 Dark Down 66.7 181.6 Up 06:02:43 - 06:32:43 2699
Okanogan 06:17:44 -48.1 Dark Down 67.1 181.3 Up 06:02:44 - 06:32:44 2663
Victoria 06:17:58 -46.1 Dark Down 66.8 172.6 Up 06:02:58 - 06:32:58 2648
Brewster 06:17:44 -48.2 Dark Down 67.3 180.8 Up 06:02:44 - 06:32:44 2634
Manson/Chelan 06:17:45 -48.1 Dark Down 67.6 179.9 Up 06:02:45 - 06:32:45 2609
Entiat 06:17:46 -48.3 Dark Down 67.8 179.8 Up 06:02:46 - 06:32:46 2586
Wenatchee 06:17:46 -48.4 Dark Down 68.0 179.5 Up 06:02:46 - 06:32:46 2559
Ellensburg 06:17:47 -48.6 Dark Down 68.4 179.0 Up 06:02:47 - 06:32:47 2515
Yakima 06:17:46 -48.8 Dark Down 68.8 178.9 Up 06:02:46 - 06:32:46 2473
Toppenish/White Swan 06:17:45 -49.1 Dark Down 69.1 179.3 Up 06:02:45 - 06:32:45 2452
Pasco 06:17:41 -49.8 Dark Down 69.2 182.5 Up 06:02:41 - 06:32:41 2451
PNWRO 06:17:40 -50.1 Dark Down 69.4 183.1 Up 06:02:40 - 06:32:40 2428
Goldendale 06:17:47 -49.2 Dark Down 69.6 178.2 Up 06:02:47 - 06:32:47 2391
The Dalles 06:17:48 -49.2 Dark Down 69.8 177.3 Up 06:02:48 - 06:32:48 2364
Maupin 06:17:48 -49.5 Dark Down 70.2 177.5 Up 06:02:48 - 06:32:48 2322
Redmond 06:17:47 -50.1 Dark Down 71.1 177.1 Up 06:02:47 - 06:32:47 2227
Sisters 06:17:49 -49.8 Dark Down 71.1 176.0 Up 06:02:49 - 06:32:49 2226
Bend 06:17:48 -50.1 Dark Down 71.4 176.7 Up 06:02:48 - 06:32:48 2203
Oregon Observatory 06:17:48 -50.2 Dark Down 71.5 176.3 Up 06:02:48 - 06:32:48 2184
La Pine/Gilchrist 06:17:48 -50.3 Dark Down 71.7 176.1 Up 06:02:48 - 06:32:48 2162
North Lake 06:17:46 -50.9 Dark Down 72.2 177.7 Up 06:02:46 - 06:32:46 2122
Paisley 06:17:44 -51.4 Dark Down 72.7 178.7 Up 06:02:44 - 06:32:44 2067
Lakeview 06:17:43 -51.9 Dark Down 73.3 179.3 Up 06:02:43 - 06:32:43 2015
Niwot 06:16:41 -60.7 Dark Down 70.9 224.4 Up 06:01:41 - 06:31:41 2015
Klamath Falls 06:17:49 -51.0 Dark Down 73.2 174.9 Up 06:02:49 - 06:32:49 2006
SwRI 06:16:41 -60.8 Dark Down 71.0 224.4 Up 06:01:41 - 06:31:41 2002
Cedarville 06:17:42 -52.4 Dark Down 73.9 179.8 Up 06:02:42 - 06:32:42 1948
Fall River/Burney 06:17:47 -52.0 Dark Down 74.4 175.8 Up 06:02:47 - 06:32:47 1885
Susanville 06:17:43 -52.8 Dark Down 75.0 178.1 Up 06:02:43 - 06:32:43 1824
Gimple 06:17:44 -52.8 Dark Down 75.3 177.4 Up 06:02:44 - 06:32:44 1793
Greenville 06:17:44 -52.8 Dark Down 75.3 177.1 Up 06:02:44 - 06:32:44 1792
Quincy 06:17:44 -52.9 Dark Down 75.5 177.0 Up 06:02:44 - 06:32:44 1771
Portola 06:17:42 -53.2 Dark Down 75.6 178.7 Up 06:02:42 - 06:32:42 1762
Reno 06:17:39 -53.8 Dark Down 75.9 181.1 Up 06:02:39 - 06:32:39 1740
Carson City 06:17:39 -54.0 Dark Down 76.2 181.2 Up 06:02:39 - 06:32:39 1702
Yerington 06:17:36 -54.5 Dark Down 76.4 183.6 Up 06:02:36 - 06:32:36 1688
Gardnerville 06:17:39 -54.2 Dark Down 76.5 181.4 Up 06:02:39 - 06:32:39 1676
Hawthorne 06:17:34 -55.1 Dark Down 76.9 185.8 Up 06:02:34 - 06:32:34 1644
Tonopah 06:17:27 -56.3 Dark Down 77.2 191.6 Up 06:02:27 - 06:32:27 1610
Lee Vining 06:17:35 -55.2 Dark Down 77.4 184.0 Up 06:02:35 - 06:32:35 1578
Bishop 06:17:32 -56.0 Dark Down 78.0 187.3 Up 06:02:32 - 06:32:32 1522
Beatty 06:17:24 -57.3 Dark Down 78.2 194.7 Up 06:02:24 - 06:32:24 1492
Indian Springs 06:17:19 -58.1 Dark Down 78.3 199.7 Up 06:02:19 - 06:32:19 1471
Henderson 06:17:16 -58.9 Dark Down 78.6 203.5 Up 06:02:16 - 06:32:16 1423
Patrick 06:17:11 -60.0 Dark Down 78.7 209.5 Up 06:02:11 - 06:32:11 1371
Searchlight/Boulder City 06:17:15 -59.3 Dark Down 79.1 205.0 Up 06:02:15 - 06:32:15 1362
DCO 06:17:07 -60.6 Dark Down 78.7 213.1 Up 06:02:07 - 06:32:07 1349
Kingman/Dolan Springs 06:17:11 -60.0 Dark Down 79.0 209.3 Up 06:02:11 - 06:32:11 1345
Laughlin/Bullhead City 06:17:14 -59.7 Dark Down 79.2 207.1 Up 06:02:14 - 06:32:14 1335
Mohave Valley 06:17:13 -59.9 Dark Down 79.4 207.8 Up 06:02:13 - 06:32:13 1305
CPSLO 06:17:40 -55.6 Dark Down 80.1 177.1 Up 06:02:40 - 06:32:40 1274
Lake Havasu City 06:17:12 -60.3 Dark Down 79.7 210.0 Up 06:02:12 - 06:32:12 1266
Parker 06:17:12 -60.5 Dark Down 80.0 211.1 Up 06:02:12 - 06:32:12 1228
George/Scottsdale 06:17:00 -62.3 Dark Down 79.1 222.5 Up 06:02:00 - 06:32:00 1220
Blythe 06:17:12 -60.7 Dark Down 80.6 211.3 Up 06:02:12 - 06:32:12 1167
Wildwood 06:17:30 -57.7 Dark Down 81.3 188.7 Up 06:02:30 - 06:32:30 1165
Idyllwild 06:17:22 -59.2 Dark Down 81.2 200.0 Up 06:02:22 - 06:32:22 1150
Calipatria 06:17:16 -60.3 Dark Down 81.4 208.1 Up 06:02:16 - 06:32:16 1100
Yuma 06:17:12 -61.2 Dark Down 81.4 214.2 Up 06:02:12 - 06:32:12 1066

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 450265, (2023/02/12 06:17UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  2.59 103
77Kap Gem      07:44:26.8 +24:23:52  3.6  1.06 103
76 Gem         07:44:06.9 +25:47:03  6.6  0.45 103
450265         07:45:25.0 +25:26:15 15.7       103
Positions are for J2000

Event circumstances last updated at 2020/03/19 21:07:04 UT

Marc W. Buie, Southwest Research Institute

RECON