RECON: TNO occultation with 84922

Event between (84922) 03VS2 and star GA1220:02113278 with event index number of 2404915

Geocentric closest approach at 2021/11/06 04:32:42 UTC

J2000 position of star is 05:45:35.4 +32:34:53
Equinox of date position of star is 05:47:01.0 +32:35:19
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=19.7

[RECON map]
TNO is 36.8 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 17.4 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 182 seconds.
The 1-sigma cross-track error in the shadow position is 1594 km.
The sky-plane scale is 26145.1 km/arcsec.

The TNO has an absolute magnitude Hv=4.0
Diameter=968.3 km assuming a 5% albedo -- 55.7 sec chord
Diameter=395.3 km assuming a 30% albedo -- 22.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 84922, (2021/11/06 04:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:10.6 +16:33:05  0.8 22.50 171
Alnath         05:27:40.5 +28:37:26  1.6  5.75 159
PPM 070700     05:42:00.8 +31:22:05  5.9  1.62 155
PPM 070825     05:47:52.7 +32:39:22  8.3  0.19 154
84922          05:47:01.2 +32:35:19 16.6       154
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 4.9 sigma about the mid-time.
The median site spacing is 21.7 km RECON observability=0.7 and success probability=20.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 04:37:08 -38.0 Dark Down 20.8 63.9 Low 04:22:08 - 04:52:08 -1116
Clarence Fulton 04:37:00 -39.8 Dark Down 24.0 67.2 Low 04:22:00 - 04:52:00 -1161
Peachland 04:37:02 -39.7 Dark Down 23.5 66.7 Low 04:22:02 - 04:52:02 -1177
Kelowna 04:37:02 -39.8 Dark Down 23.7 67.0 Low 04:22:02 - 04:52:02 -1181
Summerland 04:37:02 -39.8 Dark Down 23.5 66.7 Low 04:22:02 - 04:52:02 -1191
Penticton 04:37:03 -39.9 Dark Down 23.5 66.8 Low 04:22:03 - 04:52:03 -1200
Oliver 04:37:04 -40.1 Dark Down 23.4 66.6 Low 04:22:04 - 04:52:04 -1224
Anarchist Mountain Observatory 04:37:05 -40.3 Dark Down 23.5 66.7 Low 04:22:05 - 04:52:05 -1244
Tonasket 04:37:06 -40.4 Dark Down 23.3 66.5 Low 04:22:06 - 04:52:06 -1263
Okanogan 04:37:08 -40.4 Dark Down 23.1 66.3 Low 04:22:08 - 04:52:08 -1280
Manson/Chelan 04:37:10 -40.3 Dark Down 22.5 65.8 Low 04:22:10 - 04:52:10 -1291
Brewster 04:37:09 -40.4 Dark Down 22.8 66.1 Low 04:22:09 - 04:52:09 -1291
Wenatchee 04:37:13 -40.4 Dark Down 22.2 65.5 Low 04:22:13 - 04:52:13 -1317
Ellensburg 04:37:15 -40.4 Dark Down 21.9 65.2 Low 04:22:15 - 04:52:15 -1338
Yakima 04:37:16 -40.5 Dark Down 21.8 65.1 Low 04:22:16 - 04:52:16 -1366
Toppenish/White Swan 04:37:17 -40.7 Dark Down 21.8 65.1 Low 04:22:17 - 04:52:17 -1388
Goldendale 04:37:19 -40.7 Dark Down 21.3 64.6 Low 04:22:19 - 04:52:19 -1410
The Dalles 04:37:20 -40.5 Dark Down 21.0 64.3 Low 04:22:20 - 04:52:20 -1411
Maupin 04:37:22 -40.7 Dark Down 20.8 64.3 Low 04:22:22 - 04:52:22 -1446
Pasco 04:37:17 -41.6 Dark Down 22.5 65.8 Low 04:22:17 - 04:52:17 -1450
PNWRO 04:37:18 -41.8 Dark Down 22.6 65.9 Low 04:22:18 - 04:52:18 -1477
Sisters 04:37:25 -40.7 Dark Down 20.2 63.7 Low 04:22:25 - 04:52:25 -1488
Redmond 04:37:25 -41.0 Dark Down 20.4 63.9 Low 04:22:25 - 04:52:25 -1507
Bend 04:37:26 -41.0 Dark Down 20.2 63.8 Low 04:22:26 - 04:52:26 -1517
Oregon Observatory 04:37:27 -40.9 Dark Down 20.1 63.6 Low 04:22:27 - 04:52:27 -1524
La Pine/Gilchrist 04:37:27 -41.0 Dark Down 19.9 63.5 Really Low 04:22:27 - 04:52:27 -1536
North Lake 04:37:29 -41.5 Dark Down 20.1 63.7 Low 04:22:29 - 04:52:29 -1595
Chiloquin 04:37:32 -41.1 Dark Down 19.2 63.0 Really Low 04:22:32 - 04:52:32 -1603
Klamath Falls 04:37:33 -41.2 Dark Down 19.1 62.9 Really Low 04:22:33 - 04:52:33 -1632
Paisley 04:37:32 -42.0 Dark Down 20.1 63.8 Low 04:22:32 - 04:52:32 -1652
Lakeview 04:37:33 -42.3 Dark Down 20.0 63.7 Low 04:22:33 - 04:52:33 -1699
Fall River/Burney 04:37:37 -41.9 Dark Down 18.8 62.8 Really Low 04:22:37 - 04:52:37 -1738
Cedarville 04:37:36 -42.6 Dark Down 19.9 63.6 Really Low 04:22:36 - 04:52:36 -1757
Susanville 04:37:40 -42.6 Dark Down 19.1 63.0 Really Low 04:22:40 - 04:52:40 -1821
Greenville 04:37:41 -42.5 Dark Down 18.7 62.8 Really Low 04:22:41 - 04:52:41 -1828
Gimple 04:37:41 -42.5 Dark Down 18.8 62.8 Really Low 04:22:41 - 04:52:41 -1833
Quincy 04:37:41 -42.5 Dark Down 18.6 62.7 Really Low 04:22:41 - 04:52:41 -1844
Portola 04:37:42 -42.9 Dark Down 18.9 62.9 Really Low 04:22:42 - 04:52:42 -1876
Reno 04:37:43 -43.5 Dark Down 19.2 63.2 Really Low 04:22:43 - 04:52:43 -1927
Carson City 04:37:44 -43.6 Dark Down 19.1 63.1 Really Low 04:22:44 - 04:52:44 -1956
Gardnerville 04:37:45 -43.7 Dark Down 19.0 63.0 Really Low 04:22:45 - 04:52:45 -1978
Yerington 04:37:44 -44.1 Dark Down 19.5 63.3 Really Low 04:22:44 - 04:52:44 -2001
Hawthorne 04:37:46 -44.7 Dark Down 19.6 63.5 Really Low 04:22:46 - 04:52:46 -2063
Lee Vining 04:37:48 -44.5 Dark Down 19.0 63.0 Really Low 04:22:48 - 04:52:48 -2085
Tonopah 04:37:47 -45.9 Dark Down 20.4 64.0 Low 04:22:47 - 04:52:47 -2167
Bishop 04:37:50 -45.2 Dark Down 19.3 63.2 Really Low 04:22:50 - 04:52:50 -2169
CPSLO 04:37:57 -43.9 Dark Down 16.7 61.6 Really Low 04:22:57 - 04:52:57 -2228
Beatty 04:37:51 -46.6 Dark Down 20.2 63.8 Low 04:22:51 - 04:52:51 -2284
Indian Springs 04:37:52 -47.5 Dark Down 20.9 64.2 Low 04:22:52 - 04:52:52 -2363
Wildwood 04:38:01 -45.9 Dark Down 17.7 62.2 Really Low 04:23:01 - 04:53:01 -2429
Henderson 04:37:53 -48.2 Dark Down 21.2 64.4 Low 04:22:53 - 04:52:53 -2441
Dunrhomin 04:37:29 -53.4 Dark Down 29.8 70.9 Low 04:22:29 - 04:52:29 -2520
Laughlin/Bullhead City 04:37:56 -48.8 Dark Down 21.1 64.3 Low 04:22:56 - 04:52:56 -2535
Patrick 04:37:55 -49.3 Dark Down 21.7 64.7 Low 04:22:55 - 04:52:55 -2548
Idyllwild 04:38:01 -47.5 Dark Down 18.9 62.9 Really Low 04:23:01 - 04:53:01 -2553
Kingman/Dolan Springs 04:37:55 -49.2 Dark Down 21.5 64.5 Low 04:22:55 - 04:52:55 -2557
Mohave Valley 04:37:56 -48.9 Dark Down 21.0 64.2 Low 04:22:56 - 04:52:56 -2558
Lake Havasu City 04:37:58 -49.2 Dark Down 21.0 64.1 Low 04:22:58 - 04:52:58 -2605
Parker 04:37:58 -49.3 Dark Down 20.9 64.0 Low 04:22:58 - 04:52:58 -2636
Calipatria 04:38:02 -48.6 Dark Down 19.5 63.2 Really Low 04:23:02 - 04:53:02 -2664
Blythe 04:38:00 -49.2 Dark Down 20.4 63.7 Low 04:23:00 - 04:53:00 -2667
Yuma 04:38:03 -49.4 Dark Down 20.0 63.4 Really Low 04:23:03 - 04:53:03 -2746
George/Scottsdale 04:37:57 -51.4 Dark Down 22.5 64.9 Low 04:22:57 - 04:52:57 -2791

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 84922, (2021/11/06 04:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 22.50 171
Alnath         05:26:17.6 +28:36:23  1.6  5.75 159
PPM 070700     05:40:35.9 +31:21:29  5.9  1.62 155
PPM 070825     05:46:26.9 +32:38:58  8.3  0.19 154
84922          05:45:35.4 +32:34:53 16.6       154
Positions are for J2000

Event circumstances last updated at 2021/10/12 02:00:57 UT

Marc W. Buie, Southwest Research Institute

RECON