RECON: TNO occultation with 33340

Event between (33340) 98VG44 and star GA1100:02889259 with event index number of 2196332

Geocentric closest approach at 2021/12/05 10:54:22 UTC

J2000 position of star is 07:41:01.4 +20:33:28
Equinox of date position of star is 07:42:17.0 +20:30:23
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 156 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 29.7 AU from the Sun and 29.0 AU from the Earth.
The TNO is moving 17.2 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 118 seconds.
The 1-sigma cross-track error in the shadow position is 1069 km.
The sky-plane scale is 21006.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=297.9 km assuming a 5% albedo -- 17.4 sec chord
Diameter=121.6 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 33340, (2021/12/05 10:54UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.3 +27:58:17  1.1  7.53 156
PPM 097834     07:42:17.1 +22:57:58  5.9  2.46 156
PPM 097798     07:40:34.9 +20:05:49  7.6  0.58 156
PPM 097856     07:43:33.0 +20:55:24  8.7  0.51 156
PPM 097839     07:42:25.7 +20:22:36 10.6  0.13 156
33340          07:42:18.7 +20:30:19 15.9       156
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 26.8 km RECON observability=1.0 and success probability=0.0%
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 10:54:40 -44.3 Dark Down 60.2 186.7 Up 10:44:20 - 11:05:00 7960
Kelowna 10:54:39 -44.5 Dark Down 60.6 186.5 Up 10:44:19 - 11:04:59 7921
Peachland 10:54:40 -44.8 Dark Down 60.7 186.0 Up 10:44:20 - 11:05:00 7907
Summerland 10:54:40 -44.8 Dark Down 60.8 186.2 Up 10:44:20 - 11:05:00 7894
Penticton 10:54:38 -44.7 Dark Down 60.9 186.4 Up 10:44:18 - 11:04:58 7889
Oliver 10:54:38 -44.8 Dark Down 61.3 186.5 Up 10:44:18 - 11:04:58 7855
Anarchist Mountain Observatory 10:54:38 -44.8 Dark Down 61.4 186.9 Up 10:44:18 - 11:04:58 7842
Tonasket 10:54:37 -44.9 Dark Down 61.7 186.8 Up 10:44:17 - 11:04:57 7811
Okanogan 10:54:38 -45.1 Dark Down 62.1 186.6 Up 10:44:18 - 11:04:58 7777
Brewster 10:54:38 -45.3 Dark Down 62.4 186.2 Up 10:44:18 - 11:04:58 7748
Victoria 10:54:53 -47.4 Dark Down 62.0 179.0 Up 10:44:33 - 11:05:13 7741
Manson/Chelan 10:54:40 -45.6 Dark Down 62.6 185.5 Up 10:44:20 - 11:05:00 7722
Wenatchee 10:54:39 -45.9 Dark Down 63.1 185.3 Up 10:44:19 - 11:04:59 7674
Ellensburg 10:54:40 -46.1 Dark Down 63.5 184.9 Up 10:44:20 - 11:05:00 7631
Yakima 10:54:39 -46.3 Dark Down 63.9 184.9 Up 10:44:19 - 11:04:59 7591
Pasco 10:54:33 -45.4 Dark Down 64.1 188.0 Up 10:44:13 - 11:04:53 7578
Toppenish/White Swan 10:54:40 -46.2 Dark Down 64.1 185.3 Up 10:44:20 - 11:05:00 7572
PNWRO 10:54:32 -45.4 Dark Down 64.3 188.6 Up 10:44:12 - 11:04:52 7558
Goldendale 10:54:40 -46.7 Dark Down 64.7 184.5 Up 10:44:20 - 11:05:00 7512
The Dalles 10:54:41 -47.0 Dark Down 64.9 183.7 Up 10:44:21 - 11:05:01 7484
Maupin 10:54:40 -47.0 Dark Down 65.3 184.0 Up 10:44:20 - 11:05:00 7444
Redmond 10:54:40 -47.4 Dark Down 66.2 184.0 Up 10:44:20 - 11:05:00 7353
Sisters 10:54:41 -47.6 Dark Down 66.2 183.0 Up 10:44:21 - 11:05:01 7350
Bend 10:54:39 -47.5 Dark Down 66.5 183.7 Up 10:44:19 - 11:04:59 7330
Oregon Observatory 10:54:41 -47.7 Dark Down 66.6 183.4 Up 10:44:21 - 11:05:01 7311
La Pine/Gilchrist 10:54:42 -47.7 Dark Down 66.8 183.3 Up 10:44:22 - 11:05:02 7289
North Lake 10:54:38 -47.4 Dark Down 67.3 184.8 Up 10:44:18 - 11:04:58 7254
Dunrhomin 10:53:20 -36.4 Dark Down 65.4 222.1 Up 10:43:00 - 11:03:40 7247
Paisley 10:54:36 -47.3 Dark Down 67.8 185.7 Up 10:44:16 - 11:04:56 7204
Chiloquin 10:54:42 -48.3 Dark Down 68.0 182.5 Up 10:44:22 - 11:05:02 7172
Lakeview 10:54:34 -47.3 Dark Down 68.3 186.3 Up 10:44:14 - 11:04:54 7156
Klamath Falls 10:54:40 -48.3 Dark Down 68.3 182.8 Up 10:44:20 - 11:05:00 7138
Cedarville 10:54:31 -47.3 Dark Down 68.9 187.0 Up 10:44:11 - 11:04:51 7092
Fall River/Burney 10:54:38 -48.3 Dark Down 69.5 183.9 Up 10:44:18 - 11:04:58 7024
Susanville 10:54:33 -47.9 Dark Down 70.1 186.0 Up 10:44:13 - 11:04:53 6971
Gimple 10:54:33 -48.1 Dark Down 70.3 185.5 Up 10:44:13 - 11:04:53 6939
Greenville 10:54:33 -48.2 Dark Down 70.4 185.3 Up 10:44:13 - 11:04:53 6938
Quincy 10:54:34 -48.2 Dark Down 70.6 185.4 Up 10:44:14 - 11:04:54 6917
Portola 10:54:31 -47.9 Dark Down 70.6 186.7 Up 10:44:11 - 11:04:51 6911
Reno 10:54:28 -47.5 Dark Down 70.8 188.6 Up 10:44:08 - 11:04:48 6894
Carson City 10:54:27 -47.5 Dark Down 71.2 188.8 Up 10:44:07 - 11:04:47 6858
Yerington 10:54:23 -47.1 Dark Down 71.3 190.7 Up 10:44:03 - 11:04:43 6848
Gardnerville 10:54:26 -47.5 Dark Down 71.4 189.1 Up 10:44:06 - 11:04:46 6833
Hawthorne 10:54:21 -46.7 Dark Down 71.7 192.5 Up 10:44:01 - 11:04:41 6809
Tonopah 10:54:13 -45.7 Dark Down 71.9 196.9 Up 10:43:53 - 11:04:33 6785
Lee Vining 10:54:22 -47.2 Dark Down 72.3 191.4 Up 10:44:02 - 11:04:42 6742
Bishop 10:54:18 -46.7 Dark Down 72.8 194.0 Up 10:43:58 - 11:04:38 6692
Beatty 10:54:09 -45.5 Dark Down 72.8 199.3 Up 10:43:49 - 11:04:29 6673
Indian Springs 10:54:04 -44.6 Dark Down 72.8 202.9 Up 10:43:44 - 11:04:24 6659
Henderson 10:54:00 -44.1 Dark Down 73.1 205.7 Up 10:43:40 - 11:04:20 6616
Patrick 10:53:52 -43.3 Dark Down 73.2 209.9 Up 10:43:32 - 11:04:12 6573
Kingman/Dolan Springs 10:53:53 -43.4 Dark Down 73.5 209.7 Up 10:43:33 - 11:04:13 6546
Laughlin/Bullhead City 10:53:55 -43.8 Dark Down 73.7 208.2 Up 10:43:35 - 11:04:15 6534
Mohave Valley 10:53:55 -43.8 Dark Down 74.0 208.6 Up 10:43:35 - 11:04:15 6505
Lake Havasu City 10:53:53 -43.7 Dark Down 74.2 210.1 Up 10:43:33 - 11:04:13 6468
CPSLO 10:54:27 -48.7 Dark Down 75.1 187.9 Up 10:44:07 - 11:04:47 6439
George/Scottsdale 10:53:40 -41.7 Dark Down 73.7 218.7 Up 10:43:20 - 11:04:00 6438
Parker 10:53:53 -43.6 Dark Down 74.5 210.8 Up 10:43:33 - 11:04:13 6432
Blythe 10:53:53 -43.9 Dark Down 75.1 210.8 Up 10:43:33 - 11:04:13 6371
Wildwood 10:54:15 -47.1 Dark Down 76.0 196.3 Up 10:43:55 - 11:04:35 6346
Idyllwild 10:54:04 -45.6 Dark Down 75.8 203.6 Up 10:43:44 - 11:04:24 6343
Calipatria 10:53:58 -44.7 Dark Down 75.9 208.7 Up 10:43:38 - 11:04:18 6301
Yuma 10:53:52 -43.9 Dark Down 75.9 212.6 Up 10:43:32 - 11:04:12 6273

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 33340, (2021/12/05 10:54UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  7.53 156
PPM 097834     07:40:58.5 +23:01:07  5.9  2.46 156
PPM 097798     07:39:17.8 +20:08:55  7.6  0.58 156
PPM 097856     07:42:15.4 +20:58:35  8.7  0.51 156
PPM 097839     07:41:08.5 +20:25:45 10.6  0.13 156
33340          07:41:01.4 +20:33:28 15.9       156
Positions are for J2000

Event circumstances last updated at 2021/06/03 02:50:13 UT

Marc W. Buie, Southwest Research Institute

RECON