RECON: TNO occultation with 11QY100

Event between 11QY100 and star GA0860:02114558 with event index number of 1587074

Geocentric closest approach at 2025/01/11 09:50:50 UTC

J2000 position of star is 07:02:30.7 -02:08:58
Equinox of date position of star is 07:03:32.0 -02:10:48
Stellar brightness G=15.8, use SENSEUP=128
Star is 40 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 20.3 AU from the Sun and 19.4 AU from the Earth.
The TNO is moving 21.6 km/sec on the sky relative to the star, or, 5.5 arcsec/hr.
The 1-sigma error in the time of the event is 136 seconds.
The 1-sigma cross-track error in the shadow position is 1207 km.
The sky-plane scale is 14067.5 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=134.3 km assuming a 5% albedo -- 2.8 sec chord
Diameter=54.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 11QY100, (2025/01/11 09:51UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:15.2 -16:45:02 -1.5 15.19  50
2Bet CMa       06:23:48.1 -17:58:12  2.0 18.58  49
PPM 189689     06:56:14.3 -02:50:13  6.0  1.99  40
PPM 176634     07:04:13.4 -02:04:09  8.5  0.16  40
PPM 176625     07:03:37.0 -02:12:22  9.5  0.04  40
11QY100        07:03:46.5 -02:11:14 15.8        40
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 5.0 sigma about the mid-time.
The median site spacing is 16.5 km RECON observability=1.0 and success probability=14.9%
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 09:50:05 -54.8 Dark Up 30.2 219.9 Up 09:38:15 - 10:01:56 2393
Kelowna 09:50:05 -55.2 Dark Up 30.5 219.9 Up 09:38:14 - 10:01:55 2369
Peachland 09:50:05 -55.4 Dark Up 30.7 219.7 Up 09:38:15 - 10:01:56 2360
Summerland 09:50:04 -55.5 Dark Up 30.8 219.8 Up 09:38:14 - 10:01:55 2352
Penticton 09:50:04 -55.5 Dark Up 30.8 219.9 Up 09:38:13 - 10:01:54 2350
Oliver 09:50:03 -55.7 Dark Up 31.1 220.1 Up 09:38:13 - 10:01:54 2330
Anarchist Mountain Observatory 09:50:02 -55.7 Dark Up 31.1 220.3 Up 09:38:11 - 10:01:52 2323
Tonasket 09:50:01 -56.0 Dark Up 31.4 220.4 Up 09:38:11 - 10:01:52 2304
Okanogan 09:50:01 -56.3 Dark Up 31.7 220.4 Up 09:38:10 - 10:01:51 2283
Brewster 09:50:00 -56.6 Dark Up 32.0 220.3 Up 09:38:10 - 10:01:51 2264
Manson/Chelan 09:50:01 -56.9 Dark Up 32.3 219.9 Up 09:38:10 - 10:01:51 2247
Victoria 09:50:12 -57.9 Dark Up 33.2 216.2 Up 09:38:21 - 10:02:02 2239
Entiat 09:50:01 -57.1 Dark Up 32.5 220.0 Up 09:38:10 - 10:01:51 2233
Wenatchee 09:50:00 -57.3 Dark Up 32.8 220.0 Up 09:38:10 - 10:01:51 2216
Ellensburg 09:50:00 -57.7 Dark Up 33.2 219.9 Up 09:38:09 - 10:01:50 2188
Yakima 09:49:59 -58.0 Dark Up 33.5 220.0 Up 09:38:08 - 10:01:49 2163
Pasco 09:49:54 -57.5 Dark Up 33.1 221.7 Up 09:38:03 - 10:01:44 2163
Toppenish/White Swan 09:49:57 -58.0 Dark Up 33.6 220.3 Up 09:38:07 - 10:01:48 2152
PNWRO 09:49:52 -57.5 Dark Up 33.2 222.0 Up 09:38:02 - 10:01:43 2151
Goldendale 09:49:57 -58.6 Dark Up 34.2 220.1 Up 09:38:07 - 10:01:48 2112
The Dalles 09:49:58 -59.0 Dark Up 34.6 219.8 Up 09:38:07 - 10:01:48 2093
Maupin 09:49:57 -59.2 Dark Up 34.8 220.1 Up 09:38:06 - 10:01:47 2068
Redmond 09:49:54 -59.8 Dark Up 35.6 220.4 Up 09:38:04 - 10:01:45 2009
Sisters 09:49:56 -60.0 Dark Up 35.7 219.9 Up 09:38:05 - 10:01:46 2004
Bend 09:49:54 -60.1 Dark Up 35.8 220.3 Up 09:38:03 - 10:01:44 1993
Oregon Observatory 09:49:54 -60.2 Dark Up 36.0 220.3 Up 09:38:03 - 10:01:44 1980
La Pine/Gilchrist 09:49:54 -60.4 Dark Up 36.2 220.3 Up 09:38:03 - 10:01:44 1965
Niwot 09:48:56 -51.5 Dark Up 29.4 237.9 Low 09:37:05 - 10:00:46 1947
North Lake 09:49:51 -60.4 Dark Up 36.2 221.2 Up 09:38:00 - 10:01:41 1945
SwRI 09:48:56 -51.6 Dark Up 29.5 237.9 Low 09:37:06 - 10:00:47 1938
Paisley 09:49:48 -60.5 Dark Up 36.5 221.8 Up 09:37:58 - 10:01:39 1914
Lakeview 09:49:46 -60.7 Dark Up 36.8 222.3 Up 09:37:55 - 10:01:36 1883
Klamath Falls 09:49:51 -61.5 Dark Up 37.4 220.7 Up 09:38:00 - 10:01:41 1863
Cedarville 09:49:44 -61.0 Dark Up 37.2 222.8 Up 09:37:53 - 10:01:34 1840
Fall River/Burney 09:49:46 -62.0 Dark Up 38.1 221.7 Up 09:37:56 - 10:01:37 1788
Susanville 09:49:42 -61.9 Dark Up 38.2 222.8 Up 09:37:52 - 10:01:33 1755
Gimple 09:49:43 -62.2 Dark Up 38.5 222.7 Up 09:37:52 - 10:01:33 1732
Greenville 09:49:43 -62.2 Dark Up 38.6 222.7 Up 09:37:52 - 10:01:33 1731
Quincy 09:49:42 -62.4 Dark Up 38.7 222.8 Up 09:37:52 - 10:01:33 1716
Portola 09:49:40 -62.1 Dark Up 38.6 223.3 Up 09:37:50 - 10:01:31 1715
Reno 09:49:38 -61.9 Dark Up 38.4 224.2 Up 09:37:47 - 10:01:28 1706
Carson City 09:49:36 -62.0 Dark Up 38.7 224.4 Up 09:37:46 - 10:01:27 1681
Yerington 09:49:34 -61.7 Dark Up 38.5 225.2 Up 09:37:43 - 10:01:24 1677
Gardnerville 09:49:36 -62.1 Dark Up 38.8 224.6 Up 09:37:45 - 10:01:26 1664
Hawthorne 09:49:31 -61.6 Dark Up 38.5 226.0 Up 09:37:41 - 10:01:22 1651
Tonopah 09:49:25 -60.8 Dark Up 38.0 227.7 Up 09:37:35 - 10:01:16 1639
Lee Vining 09:49:31 -62.2 Dark Up 39.2 225.8 Up 09:37:40 - 10:01:21 1603
Bishop 09:49:27 -62.0 Dark Up 39.2 226.9 Up 09:37:36 - 10:01:17 1569
Beatty 09:49:20 -61.0 Dark Up 38.5 228.8 Up 09:37:30 - 10:01:11 1560
Indian Springs 09:49:16 -60.3 Dark Up 38.1 230.1 Up 09:37:26 - 10:01:07 1552
Henderson 09:49:13 -60.0 Dark Up 38.0 231.1 Up 09:37:22 - 10:01:03 1522
Patrick 09:49:07 -59.4 Dark Up 37.7 232.6 Up 09:37:17 - 10:00:58 1492
Searchlight/Boulder City 09:49:10 -60.2 Dark Up 38.3 231.5 Up 09:37:20 - 10:01:01 1480
DCO 09:49:04 -58.9 Dark Up 37.4 233.4 Up 09:37:14 - 10:00:55 1479
Kingman/Dolan Springs 09:49:07 -59.6 Dark Up 38.0 232.5 Up 09:37:17 - 10:00:58 1472
Laughlin/Bullhead City 09:49:09 -60.0 Dark Up 38.3 232.0 Up 09:37:18 - 10:00:59 1462
Mohave Valley 09:49:08 -60.1 Dark Up 38.5 232.2 Up 09:37:17 - 10:00:58 1441
Lake Havasu City 09:49:06 -60.0 Dark Up 38.6 232.7 Up 09:37:16 - 10:00:57 1414
George/Scottsdale 09:48:56 -58.3 Dark Up 37.4 235.5 Up 09:37:06 - 10:00:47 1390
Parker 09:49:05 -60.1 Dark Up 38.8 232.9 Up 09:37:15 - 10:00:56 1387
CPSLO 09:49:30 -64.5 Dark Up 41.9 225.8 Up 09:37:39 - 10:01:20 1375
Blythe 09:49:05 -60.5 Dark Up 39.3 233.0 Up 09:37:14 - 10:00:55 1341
Idyllwild 09:49:12 -62.1 Dark Up 40.6 230.9 Up 09:37:22 - 10:01:03 1318
Wildwood 09:49:19 -63.5 Dark Up 41.5 228.7 Up 09:37:29 - 10:01:10 1315
Calipatria 09:49:07 -61.4 Dark Up 40.2 232.4 Up 09:37:16 - 10:00:57 1287
Yuma 09:49:02 -60.8 Dark Up 39.9 233.6 Up 09:37:12 - 10:00:53 1267

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 11QY100, (2025/01/11 09:51UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.1 -16:43:22 -1.5 15.19  50
2Bet CMa       06:22:42.0 -17:57:21  2.0 18.58  49
PPM 189689     06:54:58.9 -02:48:13  6.0  1.99  40
PPM 176634     07:02:57.6 -02:01:52  8.5  0.16  40
PPM 176625     07:02:21.3 -02:10:05  9.5  0.04  40
11QY100        07:02:30.7 -02:08:58 15.8        40
Positions are for J2000

Event circumstances last updated at 2020/03/25 22:05:22 UT

Marc W. Buie, Southwest Research Institute

RECON