RECON: TNO occultation with 03QX111

Event between 03QX111 and star GA0900:00119667 with event index number of 1548987

Geocentric closest approach at 2021/10/22 08:33:30 UTC

J2000 position of star is 01:24:23.8 +01:41:01
Equinox of date position of star is 01:25:31.0 +01:47:47
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 41.6 AU from the Sun and 40.6 AU from the Earth.
The TNO is moving 25.1 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 143 seconds.
The 1-sigma cross-track error in the shadow position is 1839 km.
The sky-plane scale is 29456.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=237.7 km assuming a 5% albedo -- 9.9 sec chord
Diameter=97.0 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03QX111, (2021/10/22 08:34UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:51.0 -29:30:22  1.2 46.98  75
68Omi Cet      02:20:27.0 -02:52:47  2.0 14.50  22
PPM 144619     01:28:01.4 +03:38:52  6.5  1.95  27
PPM 144592     01:26:27.6 +01:34:24  8.0  0.32  29
PPM 144547     01:24:44.6 +02:00:54  9.8  0.29  29
PPM 144543     01:24:33.9 +01:51:48 10.6  0.25  29
03QX111        01:25:31.2 +01:47:48 15.8        28
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 23.4 km RECON observability=1.0 and success probability=4.3%
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 08:31:32 -49.6 Dark Up 39.0 204.0 Up 08:19:09 - 08:43:56 -4153
Kelowna 08:31:32 -50.0 Dark Up 39.4 204.0 Up 08:19:09 - 08:43:56 -4180
Peachland 08:31:33 -50.2 Dark Up 39.5 203.6 Up 08:19:10 - 08:43:57 -4181
Victoria 08:31:43 -52.0 Dark Up 41.5 199.4 Up 08:19:19 - 08:44:06 -4186
Summerland 08:31:33 -50.3 Dark Up 39.6 203.8 Up 08:19:10 - 08:43:57 -4196
Penticton 08:31:33 -50.3 Dark Up 39.7 204.0 Up 08:19:09 - 08:43:56 -4204
Oliver 08:31:33 -50.7 Dark Up 40.0 204.1 Up 08:19:09 - 08:43:56 -4232
Anarchist Mountain Observatory 08:31:32 -50.8 Dark Up 40.1 204.4 Up 08:19:09 - 08:43:56 -4250
Tonasket 08:31:32 -51.1 Dark Up 40.4 204.4 Up 08:19:09 - 08:43:56 -4273
Okanogan 08:31:33 -51.4 Dark Up 40.8 204.3 Up 08:19:09 - 08:43:56 -4296
Brewster 08:31:34 -51.7 Dark Up 41.1 204.2 Up 08:19:10 - 08:43:57 -4313
Manson/Chelan 08:31:35 -52.0 Dark Up 41.3 203.8 Up 08:19:11 - 08:43:58 -4320
Wenatchee 08:31:35 -52.5 Dark Up 41.8 203.7 Up 08:19:11 - 08:43:58 -4354
Ellensburg 08:31:36 -52.9 Dark Up 42.3 203.6 Up 08:19:12 - 08:43:59 -4382
Yakima 08:31:36 -53.3 Dark Up 42.6 203.7 Up 08:19:12 - 08:43:59 -4415
Toppenish/White Swan 08:31:35 -53.5 Dark Up 42.8 204.0 Up 08:19:12 - 08:43:59 -4437
Goldendale 08:31:37 -54.1 Dark Up 43.4 203.7 Up 08:19:13 - 08:44:00 -4471
The Dalles 08:31:38 -54.4 Dark Up 43.7 203.3 Up 08:19:15 - 08:44:02 -4480
Pasco 08:31:32 -53.3 Dark Up 42.5 205.7 Up 08:19:09 - 08:43:56 -4481
PNWRO 08:31:31 -53.5 Dark Up 42.7 206.1 Up 08:19:08 - 08:43:55 -4507
Maupin 08:31:38 -54.8 Dark Up 44.1 203.6 Up 08:19:14 - 08:44:01 -4518
Sisters 08:31:39 -55.7 Dark Up 45.0 203.3 Up 08:19:16 - 08:44:03 -4578
Redmond 08:31:38 -55.7 Dark Up 44.9 203.8 Up 08:19:15 - 08:44:02 -4591
Bend 08:31:39 -55.9 Dark Up 45.2 203.7 Up 08:19:15 - 08:44:02 -4605
Oregon Observatory 08:31:39 -56.1 Dark Up 45.4 203.6 Up 08:19:16 - 08:44:03 -4616
La Pine/Gilchrist 08:31:40 -56.3 Dark Up 45.6 203.6 Up 08:19:16 - 08:44:03 -4631
North Lake 08:31:38 -56.6 Dark Up 45.8 204.6 Up 08:19:14 - 08:44:01 -4685
Chiloquin 08:31:41 -57.4 Dark Up 46.7 203.6 Up 08:19:17 - 08:44:04 -4716
Paisley 08:31:37 -57.0 Dark Up 46.2 205.4 Up 08:19:14 - 08:44:01 -4742
Klamath Falls 08:31:41 -57.7 Dark Up 47.0 203.9 Up 08:19:17 - 08:44:04 -4748
Lakeview 08:31:37 -57.4 Dark Up 46.6 205.9 Up 08:19:13 - 08:44:00 -4792
Cedarville 08:31:37 -58.0 Dark Up 47.1 206.4 Up 08:19:13 - 08:44:00 -4854
Fall River/Burney 08:31:40 -58.8 Dark Up 47.9 204.9 Up 08:19:17 - 08:44:04 -4861
Susanville 08:31:39 -59.1 Dark Up 48.3 206.3 Up 08:19:15 - 08:44:02 -4938
Greenville 08:31:39 -59.5 Dark Up 48.6 206.0 Up 08:19:16 - 08:44:03 -4954
Gimple 08:31:39 -59.5 Dark Up 48.6 206.1 Up 08:19:16 - 08:44:03 -4956
Quincy 08:31:39 -59.7 Dark Up 48.8 206.1 Up 08:19:16 - 08:44:03 -4972
Portola 08:31:38 -59.7 Dark Up 48.7 206.9 Up 08:19:15 - 08:44:02 -4997
Reno 08:31:36 -59.7 Dark Up 48.8 207.9 Up 08:19:13 - 08:44:00 -5040
Carson City 08:31:36 -60.0 Dark Up 49.1 208.1 Up 08:19:13 - 08:44:00 -5072
Gardnerville 08:31:37 -60.2 Dark Up 49.3 208.3 Up 08:19:13 - 08:44:00 -5096
Yerington 08:31:35 -60.0 Dark Up 49.0 209.1 Up 08:19:11 - 08:43:58 -5109
Hawthorne 08:31:33 -60.2 Dark Up 49.2 210.1 Up 08:19:10 - 08:43:57 -5166
Lee Vining 08:31:35 -60.9 Dark Up 49.9 209.8 Up 08:19:11 - 08:43:58 -5203
Tonopah 08:31:29 -60.1 Dark Up 49.0 212.4 Up 08:19:06 - 08:43:53 -5251
Bishop 08:31:33 -61.2 Dark Up 50.1 211.2 Up 08:19:09 - 08:43:56 -5280
Beatty 08:31:28 -60.9 Dark Up 49.8 213.7 Up 08:19:04 - 08:43:51 -5371
Dunrhomin 08:30:55 -52.7 Dark Up 41.5 225.8 Up 08:18:31 - 08:43:18 -5375
CPSLO 08:31:41 -63.8 Dark Up 52.8 209.2 Up 08:19:18 - 08:44:05 -5401
Indian Springs 08:31:25 -60.8 Dark Up 49.6 215.4 Up 08:19:02 - 08:43:49 -5434
Henderson 08:31:23 -60.9 Dark Up 49.7 216.7 Up 08:18:59 - 08:43:46 -5505
Wildwood 08:31:36 -64.1 Dark Up 53.0 213.1 Up 08:19:12 - 08:43:59 -5579
Patrick 08:31:20 -60.8 Dark Up 49.6 218.7 Up 08:18:56 - 08:43:43 -5597
Laughlin/Bullhead City 08:31:22 -61.4 Dark Up 50.2 217.9 Up 08:18:59 - 08:43:46 -5600
Kingman/Dolan Springs 08:31:21 -61.1 Dark Up 49.9 218.6 Up 08:18:57 - 08:43:44 -5613
Mohave Valley 08:31:22 -61.6 Dark Up 50.4 218.1 Up 08:18:59 - 08:43:46 -5626
Idyllwild 08:31:30 -63.6 Dark Up 52.4 216.0 Up 08:19:06 - 08:43:53 -5671
Lake Havasu City 08:31:22 -61.8 Dark Up 50.6 218.7 Up 08:18:58 - 08:43:45 -5672
Parker 08:31:22 -62.1 Dark Up 50.8 219.1 Up 08:18:58 - 08:43:45 -5706
Blythe 08:31:23 -62.6 Dark Up 51.4 219.1 Up 08:18:59 - 08:43:46 -5748
Calipatria 08:31:26 -63.5 Dark Up 52.3 218.2 Up 08:19:03 - 08:43:50 -5767
George/Scottsdale 08:31:15 -61.1 Dark Up 49.9 222.6 Up 08:18:51 - 08:43:38 -5820
Yuma 08:31:24 -63.3 Dark Up 52.1 219.8 Up 08:19:00 - 08:43:47 -5836

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 03QX111, (2021/10/22 08:34UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 46.98  75
68Omi Cet      02:19:20.8 -02:58:45  2.0 14.50  22
PPM 144619     01:26:53.6 +03:32:06  6.5  1.95  27
PPM 144592     01:25:20.3 +01:27:37  8.0  0.32  29
PPM 144547     01:23:37.2 +01:54:06  9.8  0.29  29
PPM 144543     01:23:26.6 +01:45:00 10.6  0.25  29
03QX111        01:24:23.8 +01:41:01 15.8        29
Positions are for J2000

Event circumstances last updated at 2021/10/03 01:34:11 UT

Marc W. Buie, Southwest Research Institute

RECON