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 08:34:06 UTC

J2000 position of star is 01:24:23.8 +01:41:01
Equinox of date position of star is 01:25:26.2 +01:47:18
Stellar brightness G=15.8, use SENSEUP=128
Star is 29 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=26.2

[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 173 seconds.
The 1-sigma cross-track error in the shadow position is 2045 km.
The sky-plane scale is 29456.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=241.0 km assuming a 5% albedo -- 2.4 sec chord
Diameter=98.4 km assuming a 30% albedo -- 1.0 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 19.0 km RECON observability=1.0 and success probability=8.2%
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 08:32:07 -49.6 Dark Up 38.9 204.2 Up 08:17:14 - 08:47:00 -3355
Kelowna 08:32:08 -50.0 Dark Up 39.3 204.2 Up 08:17:15 - 08:47:01 -3382
Peachland 08:32:09 -50.1 Dark Up 39.5 203.8 Up 08:17:16 - 08:47:02 -3383
Victoria 08:32:18 -52.0 Dark Up 41.5 199.6 Up 08:17:25 - 08:47:11 -3388
Summerland 08:32:08 -50.3 Dark Up 39.6 204.0 Up 08:17:15 - 08:47:01 -3397
Penticton 08:32:08 -50.3 Dark Up 39.6 204.2 Up 08:17:15 - 08:47:01 -3406
Oliver 08:32:08 -50.6 Dark Up 40.0 204.3 Up 08:17:15 - 08:47:01 -3433
Anarchist Mountain Observatory 08:32:08 -50.7 Dark Up 40.1 204.6 Up 08:17:15 - 08:47:01 -3452
Tonasket 08:32:08 -51.1 Dark Up 40.4 204.6 Up 08:17:15 - 08:47:01 -3475
Okanogan 08:32:08 -51.4 Dark Up 40.7 204.5 Up 08:17:15 - 08:47:01 -3498
Brewster 08:32:09 -51.7 Dark Up 41.0 204.4 Up 08:17:16 - 08:47:02 -3515
Manson/Chelan 08:32:10 -52.0 Dark Up 41.3 204.0 Up 08:17:17 - 08:47:03 -3522
Entiat 08:32:10 -52.2 Dark Up 41.5 204.0 Up 08:17:17 - 08:47:03 -3538
Wenatchee 08:32:10 -52.5 Dark Up 41.8 203.9 Up 08:17:17 - 08:47:03 -3556
Ellensburg 08:32:11 -52.9 Dark Up 42.2 203.8 Up 08:17:18 - 08:47:04 -3584
Yakima 08:32:11 -53.3 Dark Up 42.6 203.9 Up 08:17:18 - 08:47:04 -3617
Toppenish/White Swan 08:32:11 -53.5 Dark Up 42.8 204.2 Up 08:17:18 - 08:47:04 -3639
Goldendale 08:32:12 -54.1 Dark Up 43.4 203.9 Up 08:17:19 - 08:47:05 -3674
The Dalles 08:32:13 -54.4 Dark Up 43.7 203.5 Up 08:17:20 - 08:47:06 -3683
Pasco 08:32:08 -53.3 Dark Up 42.5 205.9 Up 08:17:15 - 08:47:01 -3683
PNWRO 08:32:07 -53.4 Dark Up 42.6 206.3 Up 08:17:14 - 08:47:00 -3709
Maupin 08:32:13 -54.7 Dark Up 44.0 203.8 Up 08:17:20 - 08:47:06 -3720
Sisters 08:32:15 -55.7 Dark Up 45.0 203.5 Up 08:17:22 - 08:47:08 -3780
Redmond 08:32:13 -55.6 Dark Up 44.9 204.0 Up 08:17:20 - 08:47:06 -3793
Bend 08:32:14 -55.9 Dark Up 45.1 203.9 Up 08:17:21 - 08:47:07 -3807
Oregon Observatory 08:32:14 -56.1 Dark Up 45.3 203.8 Up 08:17:21 - 08:47:07 -3818
La Pine/Gilchrist 08:32:15 -56.3 Dark Up 45.5 203.8 Up 08:17:22 - 08:47:08 -3834
North Lake 08:32:13 -56.5 Dark Up 45.7 204.8 Up 08:17:20 - 08:47:06 -3888
Paisley 08:32:12 -57.0 Dark Up 46.1 205.6 Up 08:17:19 - 08:47:05 -3945
Klamath Falls 08:32:17 -57.7 Dark Up 46.9 204.1 Up 08:17:24 - 08:47:10 -3950
Lakeview 08:32:12 -57.4 Dark Up 46.5 206.1 Up 08:17:19 - 08:47:05 -3994
Cedarville 08:32:12 -57.9 Dark Up 47.1 206.6 Up 08:17:19 - 08:47:05 -4056
Fall River/Burney 08:32:16 -58.7 Dark Up 47.9 205.2 Up 08:17:23 - 08:47:09 -4064
Susanville 08:32:14 -59.1 Dark Up 48.2 206.5 Up 08:17:21 - 08:47:07 -4141
Greenville 08:32:15 -59.4 Dark Up 48.6 206.2 Up 08:17:22 - 08:47:08 -4156
Gimple 08:32:15 -59.4 Dark Up 48.5 206.3 Up 08:17:22 - 08:47:08 -4159
Quincy 08:32:15 -59.6 Dark Up 48.7 206.3 Up 08:17:22 - 08:47:08 -4175
Portola 08:32:13 -59.6 Dark Up 48.7 207.1 Up 08:17:20 - 08:47:06 -4199
Reno 08:32:12 -59.7 Dark Up 48.7 208.1 Up 08:17:19 - 08:47:05 -4242
Carson City 08:32:12 -60.0 Dark Up 49.0 208.3 Up 08:17:19 - 08:47:05 -4275
Gardnerville 08:32:12 -60.2 Dark Up 49.2 208.5 Up 08:17:19 - 08:47:05 -4299
Yerington 08:32:10 -59.9 Dark Up 48.9 209.3 Up 08:17:17 - 08:47:03 -4311
Hawthorne 08:32:09 -60.2 Dark Up 49.1 210.3 Up 08:17:16 - 08:47:02 -4369
Lee Vining 08:32:10 -60.9 Dark Up 49.8 210.0 Up 08:17:17 - 08:47:03 -4406
Tonopah 08:32:04 -60.1 Dark Up 49.0 212.6 Up 08:17:11 - 08:46:57 -4453
Bishop 08:32:08 -61.1 Dark Up 50.0 211.4 Up 08:17:15 - 08:47:01 -4483
Beatty 08:32:04 -60.9 Dark Up 49.7 213.9 Up 08:17:11 - 08:46:57 -4574
Niwot 08:31:30 -52.7 Dark Up 41.5 226.0 Up 08:16:37 - 08:46:23 -4591
SwRI 08:31:30 -52.9 Dark Up 41.6 226.0 Up 08:16:37 - 08:46:23 -4598
CPSLO 08:32:17 -63.8 Dark Up 52.7 209.4 Up 08:17:24 - 08:47:10 -4604
Indian Springs 08:32:00 -60.7 Dark Up 49.5 215.6 Up 08:17:07 - 08:46:53 -4637
Henderson 08:31:58 -60.8 Dark Up 49.6 216.9 Up 08:17:05 - 08:46:51 -4708
Searchlight/Boulder City 08:31:58 -61.2 Dark Up 50.0 217.4 Up 08:17:05 - 08:46:51 -4764
Wildwood 08:32:11 -64.0 Dark Up 52.9 213.3 Up 08:17:18 - 08:47:04 -4782
Patrick 08:31:55 -60.8 Dark Up 49.6 218.8 Up 08:17:02 - 08:46:48 -4800
Laughlin/Bullhead City 08:31:58 -61.3 Dark Up 50.1 218.1 Up 08:17:05 - 08:46:51 -4802
Kingman/Dolan Springs 08:31:56 -61.0 Dark Up 49.8 218.8 Up 08:17:03 - 08:46:49 -4815
Mohave Valley 08:31:58 -61.5 Dark Up 50.3 218.3 Up 08:17:05 - 08:46:51 -4829
DCO 08:31:53 -60.6 Dark Up 49.4 220.0 Up 08:17:00 - 08:46:46 -4850
Idyllwild 08:32:05 -63.5 Dark Up 52.3 216.3 Up 08:17:12 - 08:46:58 -4874
Lake Havasu City 08:31:57 -61.7 Dark Up 50.5 218.9 Up 08:17:04 - 08:46:50 -4874
Parker 08:31:57 -62.0 Dark Up 50.8 219.3 Up 08:17:04 - 08:46:50 -4909
Blythe 08:31:58 -62.5 Dark Up 51.3 219.3 Up 08:17:05 - 08:46:51 -4950
Calipatria 08:32:02 -63.4 Dark Up 52.2 218.4 Up 08:17:09 - 08:46:55 -4970
George/Scottsdale 08:31:50 -61.0 Dark Up 49.8 222.7 Up 08:16:57 - 08:46:43 -5023
Yuma 08:31:59 -63.3 Dark Up 52.1 220.0 Up 08:17:06 - 08:46:52 -5039

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 -29:37:23  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 2020/03/08 22:50:39 UT

Marc W. Buie, Southwest Research Institute

RECON