RECON: TNO occultation with 535993

Event between (535993) 15BG519 and star GA0700:04896117 with event index number of 2138146

Geocentric closest approach at 2028/06/03 05:15:57 UTC

J2000 position of star is 11:33:23.3 -19:33:08
Equinox of date position of star is 11:34:36.8 -19:41:13
Stellar brightness G=12.8, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 24 degrees from the moon. Moon is 81% illuminated.
Apparent brightness V=22.5

[RECON map]
Object is 39.7 AU from the Sun and 39.4 AU from the Earth.
Apparent velocity is 9.4 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 664 seconds.
The 1-sigma cross-track error in the shadow position is 4670 km.
The sky-plane scale is 28557.6 km/arcsec.

The object has an absolute magnitude Hv=6.4
Diameter=313.3 km assuming a 5% albedo -- 33.3 sec chord
Diameter=127.9 km assuming a 30% albedo -- 13.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 535993, (2028/06/03 05:04UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:41.7 -11:18:31  1.0 28.18   4
4Gam Crv       12:17:16.4 -17:41:59  2.6 10.25  14
13Lam Crt      11:24:46.7 -18:56:12  5.0  2.49  26
PPM 224560     11:34:05.2 -19:01:42  8.5  0.70  24
PPM 224580     11:34:40.8 -19:38:30  9.5  0.08  24
535993         11:34:49.2 -19:42:34 12.8        24
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 1.4 sigma about the mid-time.
The median site spacing is 31.9 km RECON observability=0.4 and success probability=4.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Nikitin 05:22:32 -23.6 Dark Up 11.9 231.4 Really Low 05:07:32 - 05:37:32 2725
CU-SBO 05:22:34 -23.7 Dark Up 11.9 231.4 Really Low 05:07:34 - 05:37:34 2724
Dunrhomin 05:22:34 -23.5 Dark Up 11.7 231.4 Really Low 05:07:34 - 05:37:34 2718
George/Scottsdale 05:22:02 -26.7 Dark Up 20.1 227.7 Low 05:07:02 - 05:37:02 2605
Yuma 05:22:02 -26.2 Dark Up 22.5 225.9 Low 05:07:02 - 05:37:02 2469
Patrick 05:22:26 -24.4 Dark Up 20.1 225.8 Low 05:07:26 - 05:37:26 2448
Lake Havasu City 05:22:20 -24.9 Dark Up 21.0 225.7 Low 05:07:20 - 05:37:20 2445
Laughlin/Bullhead City 05:22:25 -24.3 Dark Up 20.7 225.3 Low 05:07:25 - 05:37:25 2413
Calipatria 05:22:13 -25.5 Dark Up 22.7 225.1 Low 05:07:13 - 05:37:13 2406
Idyllwild 05:22:20 -24.4 Dark Up 22.9 224.0 Low 05:07:20 - 05:37:20 2322
Beatty 05:22:46 -21.9 Dark Up 20.6 223.1 Low 05:07:46 - 05:37:46 2241
Wildwood 05:22:31 -23.2 Dark Up 23.7 222.3 Low 05:07:31 - 05:37:31 2196
Bishop 05:22:55 -20.7 Dark Up 21.1 221.7 Low 05:07:55 - 05:37:55 2132
Sleaford 05:24:05 -12.5 AT Up 4.4 229.8 Really Low 05:09:05 - 05:39:05 2107
Hawthorne 05:23:06 -19.7 Dark Up 20.4 221.2 Low 05:08:06 - 05:38:06 2087
Lee Vining 05:23:06 -19.9 Dark Up 21.0 221.0 Low 05:08:06 - 05:38:06 2073
Yerington 05:23:14 -19.1 Dark Up 20.3 220.7 Low 05:08:14 - 05:38:14 2042
Gardnerville 05:23:16 -18.9 Dark Up 20.6 220.2 Low 05:08:16 - 05:38:16 2008
Carson City 05:23:16 -18.7 Dark Up 20.4 220.1 Low 05:08:16 - 05:38:16 1999
Reno 05:23:17 -18.4 Dark Up 20.2 220.0 Low 05:08:17 - 05:38:17 1988
Portola 05:23:23 -17.9 AT Up 20.3 219.4 Low 05:08:23 - 05:38:23 1941
Quincy 05:23:24 -17.5 AT Up 20.4 219.0 Low 05:08:24 - 05:38:24 1909
Cedarville 05:23:36 -16.7 AT Up 18.8 219.4 Really Low 05:08:36 - 05:38:36 1909
Gimple 05:23:27 -17.4 AT Up 20.2 219.0 Low 05:08:27 - 05:38:27 1908
Greenville 05:23:29 -17.4 AT Up 20.2 219.0 Low 05:08:29 - 05:38:29 1903
Fall River/Burney 05:23:36 -16.5 AT Up 19.7 218.4 Really Low 05:08:36 - 05:38:36 1851
PNWRO 05:24:02 -13.7 AT Up 14.7 219.7 Really Low 05:09:02 - 05:39:02 1828
Klamath Falls 05:23:46 -15.4 AT Up 19.0 217.8 Really Low 05:08:46 - 05:38:46 1794
Chiloquin 05:23:48 -15.1 AT Up 18.7 217.7 Really Low 05:08:48 - 05:38:48 1779
Bend 05:23:57 -14.2 AT Up 17.3 217.9 Really Low 05:08:57 - 05:38:57 1763
Oregon Observatory 05:23:57 -14.3 AT Up 17.5 217.8 Really Low 05:08:57 - 05:38:57 1762
Sisters 05:23:59 -13.9 AT Up 17.2 217.7 Really Low 05:08:59 - 05:38:59 1741
Maupin 05:24:04 -13.4 AT Up 16.3 217.9 Really Low 05:09:04 - 05:39:04 1739
Toppenish/White Swan 05:24:09 -12.8 AT Up 15.0 218.4 Really Low 05:09:09 - 05:39:09 1734
The Dalles 05:24:07 -13.0 AT Up 16.0 217.8 Really Low 05:09:07 - 05:39:07 1718
Yakima 05:24:12 -12.5 AT Up 14.9 218.2 Really Low 05:09:12 - 05:39:12 1717
Ellensburg 05:24:14 -12.2 AT Up 14.6 218.1 Really Low 05:09:14 - 05:39:14 1703
Brewster 05:24:19 -11.6 NT Up 13.4 218.6 Really Low 05:09:19 - 05:39:19 1700
Okanogan 05:24:20 -11.5 NT Up 13.1 218.8 Really Low 05:09:20 - 05:39:20 1700
Wenatchee 05:24:17 -12.0 NT Up 14.2 218.3 Really Low 05:09:17 - 05:39:17 1699
Manson/Chelan 05:24:19 -11.7 NT Up 13.7 218.4 Really Low 05:09:19 - 05:39:19 1689
Anarchist Mountain Observatory 05:24:24 -11.1 NT Up 12.5 218.9 Really Low 05:09:24 - 05:39:24 1686
Oliver 05:24:25 -10.8 NT Up 12.5 218.7 Really Low 05:09:25 - 05:39:25 1668
Penticton 05:24:27 -10.6 NT Up 12.2 218.7 Really Low 05:09:27 - 05:39:27 1654
Summerland 05:24:27 -10.5 NT Up 12.2 218.6 Really Low 05:09:27 - 05:39:27 1646
Kelowna 05:24:29 -10.3 NT Up 11.9 218.7 Really Low 05:09:29 - 05:39:29 1645
Peachland 05:24:28 -10.3 NT Up 12.1 218.5 Really Low 05:09:28 - 05:39:28 1635
Kamloops 05:24:37 -9.3 NT Up 11.6 217.9 Really Low 05:09:37 - 05:39:37 1566
Victoria 05:24:32 -9.9 NT Up 14.5 215.4 Really Low 05:09:32 - 05:39:32 1493

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 535993, (2028/06/03 05:04UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 28.18   4
4Gam Crv       12:15:48.1 -17:32:30  2.6 10.25  14
13Lam Crt      11:23:21.3 -18:46:49  5.0  2.49  26
PPM 224560     11:32:39.3 -18:52:16  8.5  0.70  24
PPM 224580     11:33:15.0 -19:29:04  9.5  0.08  24
535993         11:33:23.3 -19:33:08 12.8        24
Positions are for J2000

Event circumstances last updated at 2024/05/05 03:40:36 UT

Marc W. Buie, Southwest Research Institute

RECON