RECON: TNO occultation with 585899

Event between (585899) 20HM98 and star GA0700:05048576 with event index number of 2548010

Geocentric closest approach at 2022/04/28 08:45:00 UTC

J2000 position of star is 12:27:32.6 -18:46:52
Equinox of date position of star is 12:28:40.9 -18:54:06
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 161 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 13.6 AU from the Sun and 12.7 AU from the Earth.
The TNO is moving 35.7 km/sec on the sky relative to the star, or, 14.0 arcsec/hr.
The 1-sigma error in the time of the event is 22 seconds.
The 1-sigma cross-track error in the shadow position is 547 km.
The sky-plane scale is 9199.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.4
Diameter=50.1 km assuming a 5% albedo -- 1.4 sec chord
Diameter=20.5 km assuming a 30% albedo -- 0.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 585899, (2022/04/28 08:45UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:22.3 -11:16:38  1.0 15.86 164
4Gam Crv       12:16:57.4 -17:39:57  2.6  3.05 162
PPM 226015     12:34:32.4 -19:54:56  6.4  1.71 160
PPM 225877     12:29:06.7 -18:43:59  7.5  0.20 161
PPM 225863     12:28:43.1 -18:43:51  9.3  0.17 161
585899         12:28:42.5 -18:54:16 14.8       161
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 14.5 km RECON observability=0.5 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 08:44:36 -24.6 Dark Down 12.0 219.7 Really Low 08:42:15 - 08:46:57 8419
Kelowna 08:44:36 -25.0 Dark Down 12.3 219.6 Really Low 08:42:15 - 08:46:57 8408
Peachland 08:44:36 -25.2 Dark Down 12.6 219.3 Really Low 08:42:15 - 08:46:57 8405
Summerland 08:44:35 -25.3 Dark Down 12.6 219.4 Really Low 08:42:14 - 08:46:56 8401
Penticton 08:44:35 -25.4 Dark Down 12.6 219.5 Really Low 08:42:14 - 08:46:56 8399
Oliver 08:44:35 -25.7 Dark Down 12.9 219.6 Really Low 08:42:14 - 08:46:56 8389
Anarchist Mountain Observatory 08:44:34 -25.9 Dark Down 13.0 219.8 Really Low 08:42:13 - 08:46:55 8385
Tonasket 08:44:34 -26.2 Dark Down 13.2 219.8 Really Low 08:42:13 - 08:46:55 8375
Okanogan 08:44:33 -26.5 Dark Down 13.5 219.7 Really Low 08:42:12 - 08:46:54 8364
Victoria 08:44:40 -26.8 Dark Down 15.0 216.3 Really Low 08:42:19 - 08:47:01 8357
Brewster 08:44:33 -26.8 Dark Down 13.8 219.6 Really Low 08:42:12 - 08:46:54 8355
Manson/Chelan 08:44:33 -27.1 Dark Down 14.2 219.3 Really Low 08:42:12 - 08:46:54 8348
Wenatchee 08:44:33 -27.6 Dark Down 14.6 219.2 Really Low 08:42:12 - 08:46:54 8332
Ellensburg 08:44:32 -28.0 Dark Down 15.0 219.1 Really Low 08:42:11 - 08:46:53 8318
Yakima 08:44:32 -28.4 Dark Down 15.3 219.1 Really Low 08:42:11 - 08:46:53 8304
Toppenish/White Swan 08:44:31 -28.6 Dark Down 15.4 219.3 Really Low 08:42:10 - 08:46:52 8297
Pasco 08:44:28 -28.5 Dark Down 15.0 220.4 Really Low 08:42:07 - 08:46:49 8296
PNWRO 08:44:28 -28.7 Dark Down 15.1 220.7 Really Low 08:42:07 - 08:46:49 8288
Goldendale 08:44:31 -29.2 Dark Down 16.1 219.0 Really Low 08:42:10 - 08:46:52 8277
The Dalles 08:44:31 -29.5 Dark Down 16.4 218.7 Really Low 08:42:10 - 08:46:52 8267
Maupin 08:44:30 -29.8 Dark Down 16.7 218.9 Really Low 08:42:09 - 08:46:51 8252
Redmond 08:44:28 -30.7 Dark Down 17.4 219.0 Really Low 08:42:07 - 08:46:49 8219
Sisters 08:44:29 -30.8 Dark Down 17.6 218.7 Really Low 08:42:08 - 08:46:50 8218
Bend 08:44:28 -31.0 Dark Down 17.6 218.9 Really Low 08:42:07 - 08:46:49 8210
Oregon Observatory 08:44:28 -31.2 Dark Down 17.8 218.8 Really Low 08:42:07 - 08:46:49 8203
La Pine/Gilchrist 08:44:28 -31.4 Dark Down 18.0 218.8 Really Low 08:42:07 - 08:46:49 8195
North Lake 08:44:26 -31.7 Dark Down 18.1 219.4 Really Low 08:42:05 - 08:46:47 8180
Paisley 08:44:24 -32.2 Dark Down 18.4 219.9 Really Low 08:42:03 - 08:46:45 8158
Chiloquin 08:44:27 -32.5 Dark Down 19.1 218.7 Really Low 08:42:06 - 08:46:48 8149
Lakeview 08:44:23 -32.7 Dark Down 18.7 220.1 Really Low 08:42:02 - 08:46:44 8138
Klamath Falls 08:44:26 -32.8 Dark Down 19.3 218.9 Really Low 08:42:05 - 08:46:47 8135
Cedarville 08:44:22 -33.3 Dark Down 19.1 220.4 Really Low 08:42:01 - 08:46:43 8110
Fall River/Burney 08:44:23 -33.9 Dark Down 20.0 219.5 Low 08:42:02 - 08:46:44 8085
Susanville 08:44:21 -34.4 Dark Down 20.2 220.3 Low 08:42:00 - 08:46:42 8059
Gimple 08:44:21 -34.7 Dark Down 20.5 220.1 Low 08:42:00 - 08:46:42 8046
Greenville 08:44:21 -34.8 Dark Down 20.5 220.1 Low 08:42:00 - 08:46:42 8046
Quincy 08:44:20 -35.0 Dark Down 20.7 220.1 Low 08:41:59 - 08:46:41 8036
Portola 08:44:19 -35.0 Dark Down 20.5 220.6 Low 08:41:58 - 08:46:40 8032
Dunrhomin 08:43:54 -30.3 Dark Down 11.8 232.6 Really Low 08:41:33 - 08:46:15 8024
Reno 08:44:18 -35.1 Dark Down 20.4 221.2 Low 08:41:57 - 08:46:39 8022
Carson City 08:44:17 -35.5 Dark Down 20.7 221.3 Low 08:41:56 - 08:46:38 8005
Yerington 08:44:15 -35.5 Dark Down 20.5 221.9 Low 08:41:54 - 08:46:36 7997
Gardnerville 08:44:16 -35.7 Dark Down 20.8 221.4 Low 08:41:55 - 08:46:37 7993
Hawthorne 08:44:13 -35.9 Dark Down 20.6 222.4 Low 08:41:52 - 08:46:34 7976
Tonopah 08:44:10 -36.0 Dark Down 20.1 223.7 Low 08:41:49 - 08:46:31 7955
Lee Vining 08:44:14 -36.5 Dark Down 21.2 222.2 Low 08:41:53 - 08:46:35 7948
Bishop 08:44:11 -37.0 Dark Down 21.3 222.9 Low 08:41:50 - 08:46:32 7919
Beatty 08:44:07 -37.0 Dark Down 20.7 224.4 Low 08:41:46 - 08:46:28 7897
Indian Springs 08:44:05 -37.0 Dark Down 20.4 225.3 Low 08:41:44 - 08:46:26 7880
Henderson 08:44:02 -37.4 Dark Down 20.3 226.0 Low 08:41:41 - 08:46:23 7852
Patrick 08:43:59 -37.6 Dark Down 20.1 227.1 Low 08:41:38 - 08:46:20 7818
Kingman/Dolan Springs 08:43:59 -37.9 Dark Down 20.4 227.0 Low 08:41:38 - 08:46:20 7806
Laughlin/Bullhead City 08:44:00 -38.1 Dark Down 20.7 226.6 Low 08:41:39 - 08:46:21 7805
CPSLO 08:44:12 -39.4 Dark Down 24.0 221.6 Low 08:41:51 - 08:46:33 7804
Mohave Valley 08:43:59 -38.3 Dark Down 20.9 226.7 Low 08:41:38 - 08:46:20 7790
Lake Havasu City 08:43:58 -38.6 Dark Down 21.0 227.0 Low 08:41:37 - 08:46:19 7768
Parker 08:43:58 -38.9 Dark Down 21.2 227.1 Low 08:41:37 - 08:46:19 7748
Wildwood 08:44:06 -40.1 Dark Down 23.8 223.7 Low 08:41:45 - 08:46:27 7743
Idyllwild 08:44:02 -40.0 Dark Down 23.0 225.3 Low 08:41:41 - 08:46:23 7727
George/Scottsdale 08:43:52 -38.5 Dark Down 20.0 229.0 Low 08:41:31 - 08:46:13 7720
Blythe 08:43:57 -39.5 Dark Down 21.8 227.0 Low 08:41:36 - 08:46:18 7719
Calipatria 08:43:58 -40.3 Dark Down 22.7 226.4 Low 08:41:37 - 08:46:19 7691
Yuma 08:43:56 -40.4 Dark Down 22.4 227.2 Low 08:41:35 - 08:46:17 7665

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 585899, (2022/04/28 08:45UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 15.86 164
4Gam Crv       12:15:48.1 -17:32:30  2.6  3.05 162
PPM 226015     12:33:22.2 -19:47:34  6.4  1.71 160
PPM 225877     12:27:56.8 -18:36:35  7.5  0.20 161
PPM 225863     12:27:33.3 -18:36:27  9.3  0.17 161
585899         12:27:32.6 -18:46:52 14.8       161
Positions are for J2000

Event circumstances last updated at 2021/10/26 23:53:26 UT

Marc W. Buie, Southwest Research Institute

RECON