RECON: TNO occultation with 556004

Event between (556004) 14HA200 and star GA0800:04805779 with event index number of 2485319

Geocentric closest approach at 2023/04/19 10:12:03 UTC

J2000 position of star is 15:33:38.5 -09:33:16
Equinox of date position of star is 15:34:52.6 -09:37:47
Stellar brightness G=12.7, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 145 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 45.6 AU from the Sun and 44.7 AU from the Earth.
The TNO is moving 22.3 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 83 seconds.
The 1-sigma cross-track error in the shadow position is 1648 km.
The sky-plane scale is 32419.9 km/arcsec.

The TNO has an absolute magnitude Hv=4.7
Diameter=673.0 km assuming a 5% albedo -- 30.6 sec chord
Diameter=274.8 km assuming a 30% albedo -- 12.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 556004, (2023/04/19 10:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.4 -26:28:54  0.9 21.42 129
27Bet Lib      15:18:15.8 -09:28:03  2.6  4.11 149
PPM 198725     15:35:42.2 -09:15:37  5.6  0.42 145
PPM 198710     15:35:01.4 -09:30:41  8.3  0.12 145
556004         15:34:54.4 -09:37:53 12.7       145
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 12.2 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)
Sleaford 10:12:30 -14.8 AT Down 25.8 203.2 Low 10:05:03 - 10:19:57 8907
Kamloops 10:13:09 -21.8 Dark Down 29.5 187.7 Low 10:05:42 - 10:20:36 8549
Kelowna 10:13:04 -22.1 Dark Down 30.2 188.7 Up 10:05:37 - 10:20:31 8530
Peachland 10:13:05 -22.3 Dark Down 30.3 188.4 Up 10:05:38 - 10:20:32 8518
Summerland 10:13:04 -22.4 Dark Down 30.5 188.5 Up 10:05:37 - 10:20:31 8512
Penticton 10:13:05 -22.4 Dark Down 30.5 188.7 Up 10:05:38 - 10:20:32 8511
Oliver 10:13:03 -22.7 Dark Down 30.9 188.7 Up 10:05:36 - 10:20:30 8494
Anarchist Mountain Observatory 10:13:04 -22.8 Dark Down 31.0 188.9 Up 10:05:37 - 10:20:31 8490
Tonasket 10:13:04 -23.0 Dark Down 31.4 188.9 Up 10:05:37 - 10:20:31 8472
Okanogan 10:13:02 -23.4 Dark Down 31.7 188.7 Up 10:05:35 - 10:20:29 8451
Brewster 10:13:03 -23.7 Dark Down 32.0 188.5 Up 10:05:36 - 10:20:30 8432
Manson/Chelan 10:13:04 -24.0 Dark Down 32.2 188.1 Up 10:05:37 - 10:20:31 8413
Wenatchee 10:13:05 -24.4 Dark Down 32.7 188.0 Up 10:05:38 - 10:20:32 8383
Victoria 10:13:15 -24.7 Dark Down 31.8 184.3 Up 10:05:48 - 10:20:42 8367
Ellensburg 10:13:03 -24.8 Dark Down 33.1 187.7 Up 10:05:36 - 10:20:30 8355
PNWRO 10:12:57 -25.0 Dark Down 34.0 189.8 Up 10:05:30 - 10:20:24 8341
Dunrhomin 10:12:01 -22.1 Dark Down 36.3 206.9 Up 10:04:34 - 10:19:28 8336
Yakima 10:13:04 -25.2 Dark Down 33.6 187.8 Up 10:05:37 - 10:20:31 8332
Toppenish/White Swan 10:13:02 -25.3 Dark Down 33.7 188.0 Up 10:05:35 - 10:20:29 8325
CU-SBO 10:12:01 -22.3 Dark Down 36.6 206.9 Up 10:04:34 - 10:19:28 8319
Goldendale 10:13:04 -25.9 Dark Down 34.3 187.5 Up 10:05:37 - 10:20:31 8283
The Dalles 10:13:04 -26.2 Dark Down 34.6 187.1 Up 10:05:37 - 10:20:31 8261
Maupin 10:13:04 -26.5 Dark Down 35.0 187.3 Up 10:05:37 - 10:20:31 8240
Sisters 10:13:04 -27.5 Dark Down 35.9 186.8 Up 10:05:37 - 10:20:31 8176
Bend 10:13:03 -27.5 Dark Down 36.1 187.1 Up 10:05:36 - 10:20:30 8169
Oregon Observatory 10:13:02 -27.7 Dark Down 36.3 186.9 Up 10:05:35 - 10:20:29 8155
North Lake 10:13:00 -28.0 Dark Down 36.9 187.7 Up 10:05:33 - 10:20:27 8131
Lakeview 10:12:56 -28.6 Dark Down 37.9 188.4 Up 10:05:29 - 10:20:23 8081
Chiloquin 10:13:03 -29.0 Dark Down 37.7 186.5 Up 10:05:36 - 10:20:30 8064
Klamath Falls 10:13:02 -29.2 Dark Down 38.0 186.7 Up 10:05:35 - 10:20:29 8045
Cedarville 10:12:55 -29.1 Dark Down 38.5 188.7 Up 10:05:28 - 10:20:22 8045
Fall River/Burney 10:13:00 -30.0 Dark Down 39.1 187.3 Up 10:05:33 - 10:20:27 7981
Susanville 10:12:56 -30.2 Dark Down 39.7 188.2 Up 10:05:29 - 10:20:23 7961
Gimple 10:12:57 -30.5 Dark Down 40.0 188.0 Up 10:05:30 - 10:20:24 7937
Greenville 10:12:57 -30.5 Dark Down 40.0 187.9 Up 10:05:30 - 10:20:24 7935
Reno 10:12:51 -30.5 Dark Down 40.4 189.4 Up 10:05:24 - 10:20:18 7927
Portola 10:12:54 -30.6 Dark Down 40.3 188.6 Up 10:05:27 - 10:20:21 7927
Quincy 10:12:55 -30.7 Dark Down 40.2 187.9 Up 10:05:28 - 10:20:22 7922
Yerington 10:12:48 -30.6 Dark Down 40.9 190.3 Up 10:05:21 - 10:20:15 7909
Carson City 10:12:50 -30.7 Dark Down 40.8 189.5 Up 10:05:23 - 10:20:17 7904
Tonopah 10:12:39 -30.3 Dark Down 41.5 193.0 Up 10:05:12 - 10:20:06 7900
Hawthorne 10:12:46 -30.7 Dark Down 41.3 191.1 Up 10:05:19 - 10:20:13 7892
Gardnerville 10:12:50 -30.9 Dark Down 41.0 189.6 Up 10:05:23 - 10:20:17 7889
Indian Springs 10:12:31 -30.6 Dark Down 42.7 195.2 Up 10:05:04 - 10:19:58 7842
Lee Vining 10:12:46 -31.3 Dark Down 41.9 190.5 Up 10:05:19 - 10:20:13 7842
Beatty 10:12:37 -30.9 Dark Down 42.6 193.8 Up 10:05:10 - 10:20:04 7834
Henderson 10:12:28 -30.6 Dark Down 43.0 196.3 Up 10:05:01 - 10:19:55 7824
Bishop 10:12:42 -31.4 Dark Down 42.4 191.6 Up 10:05:15 - 10:20:09 7821
Patrick 10:12:22 -30.4 Dark Down 43.4 197.9 Up 10:04:55 - 10:19:49 7811
Kingman/Dolan Springs 10:12:23 -30.6 Dark Down 43.6 197.7 Up 10:04:56 - 10:19:50 7790
Laughlin/Bullhead City 10:12:24 -30.9 Dark Down 43.8 197.0 Up 10:04:57 - 10:19:51 7774
Mohave Valley 10:12:23 -31.1 Dark Down 44.0 197.1 Up 10:04:56 - 10:19:50 7755
George/Scottsdale 10:12:11 -30.3 Dark Down 44.4 201.0 Up 10:04:44 - 10:19:38 7746
Lake Havasu City 10:12:22 -31.3 Dark Down 44.4 197.5 Up 10:04:55 - 10:19:49 7734
Parker 10:12:22 -31.5 Dark Down 44.7 197.7 Up 10:04:55 - 10:19:49 7710
Idyllwild 10:12:31 -33.2 Dark Down 45.6 194.6 Up 10:05:04 - 10:19:58 7614
Calipatria 10:12:24 -32.9 Dark Down 46.0 196.3 Up 10:04:57 - 10:19:51 7602
Yuma 10:12:23 -32.7 Dark Down 46.1 197.7 Up 10:04:56 - 10:19:50 7596
Wildwood 10:12:39 -34.0 Dark Down 45.6 191.9 Up 10:05:12 - 10:20:06 7585

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 556004, (2023/04/19 10:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.42 129
27Bet Lib      15:17:00.3 -09:22:59  2.6  4.11 149
PPM 198725     15:34:26.4 -09:11:01  5.6  0.42 145
PPM 198710     15:33:45.6 -09:26:04  8.3  0.12 145
556004         15:33:38.5 -09:33:16 12.7       145
Positions are for J2000

Event circumstances last updated at 2022/10/04 04:09:15 UT

Marc W. Buie, Southwest Research Institute

RECON