RECON: TNO occultation with 11QF99

Event between 11QF99 and star GA1040:00951186 with event index number of 1312976

Geocentric closest approach at 2023/12/18 11:17:50 UTC

J2000 position of star is 05:33:28.7 +15:41:15
Equinox of date position of star is 05:34:35.7 +15:41:59
Stellar brightness G=13.2, use SENSEUP=32
Star is 104 degrees from the moon. Moon is 35% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 17.2 AU from the Sun and 16.3 AU from the Earth.
The TNO is moving 22.9 km/sec on the sky relative to the star, or, 7.0 arcsec/hr.
The 1-sigma error in the time of the event is 243 seconds.
The 1-sigma cross-track error in the shadow position is 847 km.
The sky-plane scale is 11799.9 km/arcsec.

The TNO has an absolute magnitude Hv=9.8
Diameter=66.4 km assuming a 5% albedo -- 2.9 sec chord
Diameter=27.1 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 11QF99, (2023/12/18 11:18UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.2 +07:24:34  0.4  9.84 108
Bellatrix      05:26:25.1 +06:22:10  1.6  9.56 100
PPM 121025     05:31:48.6 +15:22:37  6.0  0.80 103
PPM 121111     05:35:22.5 +15:35:57  7.9  0.16 104
PPM 121097     05:34:50.9 +15:37:13  9.4  0.08 104
11QF99         05:34:51.3 +15:42:09 13.2       104
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 20.8 km RECON observability=1.0 and success probability=19.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:15:13 -42.9 Dark Down 35.5 250.6 Up 11:00:13 - 11:30:13 2568
Summerland 11:15:13 -43.2 Dark Down 35.8 250.5 Up 11:00:13 - 11:30:13 2538
Penticton 11:15:13 -43.1 Dark Down 35.8 250.7 Up 11:00:13 - 11:30:13 2534
Okanagan Falls 11:15:13 -43.2 Dark Down 35.8 250.8 Up 11:00:13 - 11:30:13 2517
Oliver 11:15:12 -43.2 Dark Down 35.9 250.9 Up 11:00:12 - 11:30:12 2502
Anarchist Mountain Observatory 11:15:12 -43.2 Dark Down 35.8 251.2 Up 11:00:12 - 11:30:12 2489
Oroville 11:15:11 -43.2 Dark Down 35.9 251.2 Up 11:00:11 - 11:30:11 2482
Tonasket 11:15:11 -43.3 Dark Down 36.0 251.4 Up 11:00:11 - 11:30:11 2461
Okanogan 11:15:10 -43.5 Dark Down 36.2 251.4 Up 11:00:10 - 11:30:10 2429
Brewster 11:15:10 -43.7 Dark Down 36.4 251.5 Up 11:00:10 - 11:30:10 2402
Manson/Chelan 11:15:10 -43.9 Dark Down 36.7 251.3 Up 11:00:10 - 11:30:10 2379
Entiat 11:15:10 -44.0 Dark Down 36.8 251.4 Up 11:00:10 - 11:30:10 2358
Wenatchee 11:15:09 -44.2 Dark Down 36.9 251.4 Up 11:00:09 - 11:30:09 2333
Ellensburg 11:15:09 -44.4 Dark Down 37.2 251.5 Up 11:00:09 - 11:30:09 2293
Yakima 11:15:08 -44.5 Dark Down 37.4 251.8 Up 11:00:08 - 11:30:08 2255
Pasco 11:15:04 -43.6 Dark Down 36.5 253.3 Up 11:00:04 - 11:30:04 2242
Toppenish/White Swan 11:15:07 -44.5 Dark Down 37.3 252.1 Up 11:00:07 - 11:30:07 2237
PNWRO 11:15:03 -43.5 Dark Down 36.4 253.7 Up 11:00:03 - 11:30:03 2222
George/Umatilla 11:15:03 -43.9 Dark Down 36.8 253.4 Up 11:00:03 - 11:30:03 2208
Goldendale 11:15:06 -44.9 Dark Down 37.8 252.1 Up 11:00:06 - 11:30:06 2181
The Dalles 11:15:07 -45.2 Dark Down 38.1 252.0 Up 11:00:07 - 11:30:07 2155
Maupin 11:15:05 -45.2 Dark Down 38.1 252.4 Up 11:00:05 - 11:30:05 2118
Madras/Culver 11:15:04 -45.3 Dark Down 38.3 252.8 Up 11:00:04 - 11:30:04 2066
Redmond 11:15:04 -45.5 Dark Down 38.5 253.0 Up 11:00:04 - 11:30:04 2031
Sisters 11:15:04 -45.7 Dark Down 38.7 252.6 Up 11:00:04 - 11:30:04 2028
Bend 11:15:03 -45.6 Dark Down 38.6 253.0 Up 11:00:03 - 11:30:03 2009
Oregon Observatory 11:15:04 -45.7 Dark Down 38.8 253.1 Up 11:00:04 - 11:30:04 1991
La Pine/Gilchrist 11:15:03 -45.8 Dark Down 38.9 253.2 Up 11:00:03 - 11:30:03 1971
North Lake 11:15:01 -45.5 Dark Down 38.6 254.0 Up 11:00:01 - 11:30:01 1937
Paisley 11:14:59 -45.3 Dark Down 38.5 254.7 Up 10:59:59 - 11:29:59 1889
Niwot 11:14:23 -34.0 Dark Down 27.6 267.6 Low 10:59:23 - 11:29:23 1882
SwRI 11:14:23 -34.1 Dark Down 27.7 267.6 Low 10:59:23 - 11:29:23 1871
Chiloquin 11:15:02 -46.3 Dark Down 39.5 253.7 Up 11:00:02 - 11:30:02 1860
Lakeview 11:14:57 -45.3 Dark Down 38.5 255.3 Up 10:59:57 - 11:29:57 1842
Klamath Falls 11:15:01 -46.3 Dark Down 39.5 254.1 Up 11:00:01 - 11:30:01 1828
Tulelake 11:14:59 -46.1 Dark Down 39.4 254.5 Up 10:59:59 - 11:29:59 1806
Cedarville 11:14:55 -45.2 Dark Down 38.5 255.9 Up 10:59:55 - 11:29:55 1781
Fall River/Burney 11:14:57 -46.2 Dark Down 39.5 255.3 Up 10:59:57 - 11:29:57 1718
Susanville 11:14:54 -45.7 Dark Down 39.2 256.4 Up 10:59:54 - 11:29:54 1666
Gimple 11:14:54 -45.9 Dark Down 39.4 256.4 Up 10:59:54 - 11:29:54 1636
Greenville 11:14:54 -46.0 Dark Down 39.4 256.4 Up 10:59:54 - 11:29:54 1635
Quincy 11:14:54 -46.0 Dark Down 39.5 256.5 Up 10:59:54 - 11:29:54 1615
Portola 11:14:53 -45.7 Dark Down 39.2 257.0 Up 10:59:53 - 11:29:53 1609
Reno 11:14:50 -45.2 Dark Down 38.7 257.7 Up 10:59:50 - 11:29:50 1592
Carson City 11:14:50 -45.2 Dark Down 38.8 258.0 Up 10:59:50 - 11:29:50 1557
Yerington 11:14:48 -44.8 Dark Down 38.4 258.6 Up 10:59:48 - 11:29:48 1547
Gardnerville 11:14:49 -45.2 Dark Down 38.8 258.2 Up 10:59:49 - 11:29:49 1533
Hawthorne 11:14:46 -44.4 Dark Down 38.1 259.4 Up 10:59:46 - 11:29:46 1508
Tonopah 11:14:41 -43.3 Dark Down 37.1 260.7 Up 10:59:41 - 11:29:41 1482
Lee Vining 11:14:46 -44.8 Dark Down 38.5 259.5 Up 10:59:46 - 11:29:46 1445
Bishop 11:14:43 -44.3 Dark Down 38.1 260.4 Up 10:59:43 - 11:29:43 1396
Beatty 11:14:38 -43.0 Dark Down 36.9 261.9 Up 10:59:38 - 11:29:38 1374
Indian Springs 11:14:35 -42.2 Dark Down 36.1 262.9 Up 10:59:35 - 11:29:35 1358
Lone Pine 11:14:40 -44.1 Dark Down 37.9 261.3 Up 10:59:40 - 11:29:40 1324
Henderson 11:14:32 -41.6 Dark Down 35.6 263.7 Up 10:59:32 - 11:29:32 1316
Patrick 11:14:28 -40.7 Dark Down 34.8 264.9 Up 10:59:28 - 11:29:28 1271
Searchlight/Boulder City 11:14:31 -41.6 Dark Down 35.6 264.2 Up 10:59:31 - 11:29:31 1259
DCO 11:14:26 -40.1 Dark Down 34.2 265.5 Up 10:59:26 - 11:29:26 1252
Kingman/Dolan Springs 11:14:28 -40.8 Dark Down 34.9 264.9 Up 10:59:28 - 11:29:28 1245
Laughlin/Bullhead City 11:14:30 -41.3 Dark Down 35.4 264.6 Up 10:59:30 - 11:29:30 1235
Mohave Valley 11:14:29 -41.3 Dark Down 35.4 264.8 Up 10:59:29 - 11:29:29 1207
Lake Havasu City 11:14:28 -41.0 Dark Down 35.2 265.2 Up 10:59:28 - 11:29:28 1171
CPSLO 11:14:44 -46.2 Dark Down 40.2 260.5 Up 10:59:44 - 11:29:44 1155
Parker 11:14:27 -41.0 Dark Down 35.2 265.5 Up 10:59:27 - 11:29:27 1136
Blythe 11:14:27 -41.2 Dark Down 35.5 265.7 Up 10:59:27 - 11:29:27 1077
Wildwood 11:14:37 -44.5 Dark Down 38.7 262.8 Up 10:59:37 - 11:29:37 1062
Idyllwild 11:14:32 -43.0 Dark Down 37.2 264.3 Up 10:59:32 - 11:29:32 1054
Calipatria 11:14:28 -42.0 Dark Down 36.3 265.5 Up 10:59:28 - 11:29:28 1011
Yuma 11:14:25 -41.2 Dark Down 35.6 266.3 Up 10:59:25 - 11:29:25 982

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 11QF99, (2023/12/18 11:18UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.84 108
Bellatrix      05:25:07.8 +06:20:58  1.6  9.56 100
PPM 121025     05:30:26.1 +15:21:37  6.0  0.80 103
PPM 121111     05:33:59.9 +15:35:04  7.9  0.16 104
PPM 121097     05:33:28.3 +15:36:19  9.4  0.08 104
11QF99         05:33:28.7 +15:41:15 13.2       104
Positions are for J2000

Event circumstances last updated at 2019/06/08 06:18:11 UT

Marc W. Buie, Southwest Research Institute

RECON