RECON: TNO occultation with 84922

Event between (84922) 03VS2 and star UC4-616-022291 with event index number of 337156

Geocentric closest approach at 2019/12/16 11:50:43 UTC

J2000 position of star is 05:25:34.0 +33:07:04
Equinox of date position of star is 05:26:48.0 +33:08:00
Stellar brightness R=16.3, use SENSEUP=128
Star is 56 degrees from the moon. Moon is 79% illuminated.
TNO apparent brightness V=19.8

[RECON map]
TNO is 36.7 AU from the Sun and 35.7 AU from the Earth.
The TNO is moving 25.3 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 157 seconds.
The 1-sigma cross-track error in the shadow position is 1701 km.
The sky-plane scale is 25911.7 km/arcsec.

The TNO has an absolute magnitude Hv=4.2
Diameter=871.0 km assuming a 5% albedo -- 34.4 sec chord
Diameter=355.6 km assuming a 30% albedo -- 14.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 84922, (2019/12/16 11:51UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.1 +16:32:52  0.8 20.03  69
Alnath         05:27:33.3 +28:37:21  1.6  4.51  56
19 Aur         05:21:20.0 +33:58:38  5.0  1.43  57
PPM 070359     05:28:10.0 +33:16:40  7.5  0.31  56
PPM 070347     05:27:27.9 +33:10:06  9.4  0.13  56
84922          05:26:52.5 +33:08:03 16.3        56
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 15.1 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)
Kelowna 11:48:07 -37.5 Dark Up 42.7 273.3 Up 11:34:35 - 12:01:40 9593
Summerland 11:48:08 -37.8 Dark Up 43.0 273.1 Up 11:34:36 - 12:01:41 9578
Penticton 11:48:07 -37.7 Dark Up 42.8 273.5 Up 11:34:35 - 12:01:40 9555
Okanagan Falls 11:48:07 -37.7 Dark Up 42.8 273.7 Up 11:34:34 - 12:01:39 9537
Oliver 11:48:07 -37.7 Dark Up 42.8 273.8 Up 11:34:34 - 12:01:39 9523
Anarchist Mountain Observatory 11:48:06 -37.6 Dark Up 42.7 274.1 Up 11:34:34 - 12:01:39 9513
Oroville 11:48:06 -37.7 Dark Up 42.7 274.1 Up 11:34:33 - 12:01:38 9504
Tonasket 11:48:05 -37.7 Dark Up 42.7 274.4 Up 11:34:32 - 12:01:37 9483
Okanogan 11:48:04 -37.9 Dark Up 42.8 274.6 Up 11:34:31 - 12:01:36 9447
Brewster 11:48:04 -38.0 Dark Up 42.9 274.7 Up 11:34:32 - 12:01:37 9416
Manson/Chelan 11:48:04 -38.3 Dark Up 43.1 274.6 Up 11:34:32 - 12:01:37 9385
Entiat 11:48:04 -38.4 Dark Up 43.2 274.8 Up 11:34:31 - 12:01:36 9363
Wenatchee 11:48:03 -38.5 Dark Up 43.2 274.9 Up 11:34:31 - 12:01:36 9336
Ellensburg 11:48:03 -38.7 Dark Up 43.3 275.2 Up 11:34:31 - 12:01:36 9291
Pasco 11:47:58 -37.8 Dark Up 42.3 276.8 Up 11:34:26 - 12:01:31 9267
Yakima 11:48:02 -38.7 Dark Up 43.3 275.5 Up 11:34:29 - 12:01:34 9252
PNWRO 11:47:57 -37.7 Dark Up 42.1 277.1 Up 11:34:24 - 12:01:29 9252
Toppenish/White Swan 11:48:01 -38.6 Dark Up 43.2 275.8 Up 11:34:29 - 12:01:34 9238
Niwot 11:47:24 -27.5 Dark Up 31.1 289.0 Up 11:33:51 - 12:00:56 9234
George/Umatilla 11:47:57 -38.0 Dark Up 42.4 276.9 Up 11:34:25 - 12:01:30 9229
Goldendale 11:48:00 -39.0 Dark Up 43.4 276.1 Up 11:34:28 - 12:01:33 9172
The Dalles 11:48:00 -39.3 Dark Up 43.6 276.1 Up 11:34:28 - 12:01:33 9139
Maupin 11:48:00 -39.2 Dark Up 43.5 276.5 Up 11:34:27 - 12:01:32 9103
Madras/Culver 11:47:58 -39.3 Dark Up 43.5 277.0 Up 11:34:25 - 12:01:30 9050
Redmond 11:47:58 -39.4 Dark Up 43.5 277.3 Up 11:34:25 - 12:01:30 9014
Sisters 11:47:59 -39.7 Dark Up 43.8 277.0 Up 11:34:26 - 12:01:31 9003
Bend 11:47:57 -39.5 Dark Up 43.5 277.4 Up 11:34:24 - 12:01:29 8989
Oregon Observatory 11:47:57 -39.6 Dark Up 43.6 277.5 Up 11:34:24 - 12:01:29 8968
La Pine/Gilchrist 11:47:57 -39.7 Dark Up 43.6 277.7 Up 11:34:24 - 12:01:29 8947
North Lake 11:47:55 -39.3 Dark Up 43.1 278.4 Up 11:34:22 - 12:01:27 8925
Paisley 11:47:53 -39.1 Dark Up 42.8 279.1 Up 11:34:20 - 12:01:25 8885
Lakeview 11:47:51 -39.0 Dark Up 42.6 279.7 Up 11:34:19 - 12:01:24 8842
Chiloquin 11:47:55 -40.0 Dark Up 43.7 278.5 Up 11:34:23 - 12:01:28 8828
Klamath Falls 11:47:54 -40.0 Dark Up 43.6 278.9 Up 11:34:22 - 12:01:27 8798
Cedarville 11:47:50 -38.9 Dark Up 42.3 280.4 Up 11:34:17 - 12:01:22 8786
Tulelake 11:47:53 -39.8 Dark Up 43.4 279.3 Up 11:34:21 - 12:01:26 8782
Fall River/Burney 11:47:51 -39.8 Dark Up 43.2 280.2 Up 11:34:18 - 12:01:23 8697
Susanville 11:47:48 -39.3 Dark Up 42.5 281.1 Up 11:34:16 - 12:01:21 8661
Gimple 11:47:48 -39.4 Dark Up 42.6 281.3 Up 11:34:15 - 12:01:20 8627
Greenville 11:47:48 -39.5 Dark Up 42.7 281.2 Up 11:34:15 - 12:01:20 8624
Portola 11:47:47 -39.1 Dark Up 42.2 281.8 Up 11:34:14 - 12:01:19 8609
Reno 11:47:44 -38.6 Dark Up 41.7 282.3 Up 11:34:12 - 12:01:17 8606
Quincy 11:47:48 -39.5 Dark Up 42.6 281.4 Up 11:34:16 - 12:01:21 8604
Yerington 11:47:42 -38.1 Dark Up 41.1 283.1 Up 11:34:10 - 12:01:15 8576
Carson City 11:47:44 -38.6 Dark Up 41.6 282.6 Up 11:34:11 - 12:01:16 8572
Tonopah 11:47:37 -36.6 Dark Up 39.4 284.8 Up 11:34:04 - 12:01:09 8559
Hawthorne 11:47:40 -37.7 Dark Up 40.6 283.7 Up 11:34:08 - 12:01:13 8551
Gardnerville 11:47:44 -38.6 Dark Up 41.5 282.9 Up 11:34:11 - 12:01:16 8550
Lee Vining 11:47:40 -38.1 Dark Up 40.8 284.0 Up 11:34:08 - 12:01:13 8478
Indian Springs 11:47:31 -35.3 Dark Up 37.8 286.6 Up 11:33:59 - 12:01:04 8476
Beatty 11:47:34 -36.2 Dark Up 38.8 285.9 Up 11:34:02 - 12:01:07 8465
Henderson 11:47:29 -34.7 Dark Up 37.2 287.2 Up 11:33:56 - 12:01:01 8452
Bishop 11:47:38 -37.5 Dark Up 40.1 284.8 Up 11:34:06 - 12:01:11 8447
DCO 11:47:24 -33.2 Dark Up 35.5 288.6 Up 11:33:52 - 12:00:57 8437
Patrick 11:47:26 -33.8 Dark Up 36.1 288.1 Up 11:33:54 - 12:00:59 8437
Kingman/Dolan Springs 11:47:26 -33.9 Dark Up 36.2 288.2 Up 11:33:53 - 12:00:58 8408
Searchlight/Boulder City 11:47:28 -34.6 Dark Up 36.9 287.7 Up 11:33:55 - 12:01:00 8399
Lone Pine 11:47:35 -37.2 Dark Up 39.7 285.6 Up 11:34:03 - 12:01:08 8385
Laughlin/Bullhead City 11:47:27 -34.3 Dark Up 36.6 288.0 Up 11:33:54 - 12:00:59 8385
Mohave Valley 11:47:26 -34.3 Dark Up 36.5 288.2 Up 11:33:54 - 12:00:59 8359
Lake Havasu City 11:47:25 -34.0 Dark Up 36.2 288.6 Up 11:33:53 - 12:00:58 8330
Parker 11:47:24 -34.0 Dark Up 36.1 288.8 Up 11:33:51 - 12:00:56 8297
Blythe 11:47:23 -34.2 Dark Up 36.1 289.1 Up 11:33:51 - 12:00:56 8234
CPSLO 11:47:38 -39.2 Dark Up 41.4 285.6 Up 11:34:06 - 12:01:11 8159
Idyllwild 11:47:28 -35.9 Dark Up 37.8 288.3 Up 11:33:55 - 12:01:00 8158
Calipatria 11:47:24 -34.9 Dark Up 36.7 289.1 Up 11:33:52 - 12:00:57 8147
Yuma 11:47:22 -34.1 Dark Up 35.8 289.7 Up 11:33:50 - 12:00:55 8143
Wildwood 11:47:32 -37.5 Dark Up 39.4 287.3 Up 11:34:00 - 12:01:05 8119

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, (2019/12/16 11:51UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.03  69
Alnath         05:26:17.5 +28:36:23  1.6  4.51  56
19 Aur         05:20:00.9 +33:57:29  5.0  1.43  57
PPM 070359     05:26:51.3 +33:15:44  7.5  0.31  56
PPM 070347     05:26:09.3 +33:09:09  9.4  0.13  56
84922          05:25:34.0 +33:07:04 16.3        56
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:40:27 UT

Marc W. Buie, Southwest Research Institute

RECON