RECON: TNO occultation with 578992

Event between (578992) 14JL80 and star GA0700:14850893 with event index number of 2555848

Geocentric closest approach at 2028/05/04 07:56:31 UTC

J2000 position of star is 17:41:43.1 -18:51:36
Equinox of date position of star is 17:43:09.5 -18:52:14
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 102 degrees from the moon. Moon is 75% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 28.6 AU from the Sun and 27.9 AU from the Earth.
Apparent velocity is 15.6 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 150 seconds.
The 1-sigma cross-track error in the shadow position is 1166 km.
The sky-plane scale is 20221.5 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 12.9 sec chord
Diameter=81.5 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 578992, (2028/05/04 07:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.0 -26:29:32  0.9 18.30  86
35Eta Oph      17:12:00.3 -15:45:29  2.6  8.11  95
58 Oph         17:45:07.8 -21:41:39  4.9  2.85 102
PPM 233526     17:45:48.2 -17:45:17  7.9  1.26 103
PPM 233425     17:42:06.8 -18:50:10  9.8  0.30 102
578992         17:43:23.1 -18:52:19 17.0       102
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 17.1 km RECON observability=0.3 and success probability=27.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:59:11 -20.6 Dark Up 14.7 151.9 Really Low 07:46:09 - 08:12:13 1584
Kamloops 08:00:05 -23.2 Dark Up 10.9 138.9 Really Low 07:47:03 - 08:13:07 1250
Kelowna 08:00:05 -24.0 Dark Up 11.8 139.6 Really Low 07:47:03 - 08:13:07 1226
Peachland 08:00:06 -24.1 Dark Up 11.8 139.3 Really Low 07:47:04 - 08:13:08 1214
Summerland 08:00:06 -24.2 Dark Up 12.0 139.3 Really Low 07:47:04 - 08:13:08 1208
Penticton 08:00:06 -24.3 Dark Up 12.1 139.4 Really Low 07:47:04 - 08:13:08 1207
Oliver 08:00:07 -24.7 Dark Up 12.3 139.4 Really Low 07:47:05 - 08:13:09 1188
Anarchist Mountain Observatory 08:00:07 -24.8 Dark Up 12.5 139.5 Really Low 07:47:05 - 08:13:09 1183
Okanogan 08:00:10 -25.5 Dark Up 12.9 139.3 Really Low 07:47:08 - 08:13:12 1143
Brewster 08:00:11 -25.7 Dark Up 13.1 139.0 Really Low 07:47:09 - 08:13:13 1124
Manson/Chelan 08:00:13 -26.0 Dark Up 13.1 138.7 Really Low 07:47:11 - 08:13:15 1104
Wenatchee 08:00:16 -26.4 Dark Up 13.3 138.5 Really Low 07:47:14 - 08:13:18 1074
Victoria 08:00:21 -25.3 Dark Up 11.1 136.0 Really Low 07:47:19 - 08:13:23 1069
Ellensburg 08:00:18 -26.8 Dark Up 13.6 138.2 Really Low 07:47:16 - 08:13:20 1045
PNWRO 08:00:15 -27.8 Dark Up 15.0 139.5 Really Low 07:47:13 - 08:13:17 1024
Yakima 08:00:19 -27.3 Dark Up 13.8 138.2 Really Low 07:47:17 - 08:13:21 1021
Toppenish/White Swan 08:00:19 -27.5 Dark Up 14.1 138.3 Really Low 07:47:17 - 08:13:21 1012
Dunrhomin 07:59:33 -31.8 Dark Up 25.4 150.6 Low 07:46:31 - 08:12:35 967
Nikitin 07:59:33 -32.0 Dark Up 25.6 150.5 Low 07:46:31 - 08:12:35 955
CU-SBO 07:59:34 -32.0 Dark Up 25.6 150.4 Low 07:46:32 - 08:12:36 950
The Dalles 08:00:24 -28.2 Dark Up 14.3 137.5 Really Low 07:47:22 - 08:13:26 948
Maupin 08:00:25 -28.7 Dark Up 14.7 137.5 Really Low 07:47:23 - 08:13:27 926
Sisters 08:00:30 -29.5 Dark Up 15.1 136.9 Really Low 07:47:28 - 08:13:32 861
Bend 08:00:29 -29.8 Dark Up 15.4 137.1 Really Low 07:47:27 - 08:13:31 852
Oregon Observatory 08:00:30 -30.0 Dark Up 15.4 137.0 Really Low 07:47:28 - 08:13:32 838
Chiloquin 08:00:36 -31.3 Dark Up 16.2 136.4 Really Low 07:47:34 - 08:13:38 744
Klamath Falls 08:00:37 -31.6 Dark Up 16.5 136.4 Really Low 07:47:35 - 08:13:39 724
Cedarville 08:00:33 -32.3 Dark Up 17.8 137.6 Really Low 07:47:31 - 08:13:35 717
Fall River/Burney 08:00:38 -32.8 Dark Up 17.6 136.5 Really Low 07:47:36 - 08:13:40 655
Gimple 08:00:39 -33.7 Dark Up 18.5 136.7 Really Low 07:47:37 - 08:13:41 607
Greenville 08:00:39 -33.7 Dark Up 18.5 136.6 Really Low 07:47:37 - 08:13:41 605
Portola 08:00:38 -34.0 Dark Up 18.9 137.0 Really Low 07:47:36 - 08:13:40 595
Reno 08:00:37 -34.3 Dark Up 19.5 137.4 Really Low 07:47:35 - 08:13:39 593
Quincy 08:00:40 -33.9 Dark Up 18.6 136.6 Really Low 07:47:38 - 08:13:42 592
Yerington 08:00:36 -34.8 Dark Up 20.2 137.9 Low 07:47:34 - 08:13:38 571
Carson City 08:00:38 -34.6 Dark Up 19.8 137.4 Really Low 07:47:36 - 08:13:40 569
Gardnerville 08:00:38 -34.9 Dark Up 20.0 137.4 Really Low 07:47:36 - 08:13:40 553
Hawthorne 08:00:35 -35.3 Dark Up 20.8 138.2 Low 07:47:33 - 08:13:37 552
Lee Vining 08:00:38 -35.9 Dark Up 21.0 137.6 Low 07:47:36 - 08:13:40 501
Beatty 08:00:31 -36.8 Dark Up 23.0 139.3 Low 07:47:29 - 08:13:33 484
Bishop 08:00:37 -36.4 Dark Up 21.8 138.1 Low 07:47:35 - 08:13:39 476
Patrick 08:00:22 -38.0 Dark Up 25.7 141.4 Low 07:47:20 - 08:13:24 448
Laughlin/Bullhead City 08:00:25 -38.3 Dark Up 25.5 140.7 Low 07:47:23 - 08:13:27 412
George/Scottsdale 08:00:16 -39.4 Dark Up 28.0 142.6 Low 07:47:14 - 08:13:18 372
Lake Havasu City 08:00:25 -39.0 Dark Up 26.1 140.7 Low 07:47:23 - 08:13:27 369
Idyllwild 08:00:38 -39.9 Dark Up 25.5 138.5 Low 07:47:36 - 08:13:40 254
Calipatria 08:00:34 -40.4 Dark Up 26.6 139.3 Low 07:47:32 - 08:13:36 237
Wildwood 08:00:45 -39.7 Dark Up 24.2 137.0 Low 07:47:43 - 08:13:47 231
Yuma 08:00:30 -40.8 Dark Up 27.4 139.9 Low 07:47:28 - 08:13:32 227

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 578992, (2028/05/04 07:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.30  86
35Eta Oph      17:10:22.7 -15:43:29  2.6  8.11  95
58 Oph         17:43:25.7 -21:41:00  4.9  2.85 102
PPM 233526     17:44:08.9 -17:44:39  7.9  1.26 103
PPM 233425     17:40:26.7 -18:49:24  9.8  0.30 102
578992         17:41:43.1 -18:51:36 17.0       102
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:28:50 UT

Marc W. Buie, Southwest Research Institute

RECON