RECON: TNO occultation with 470593

Event between (470593) 08LP17 and star GA0600:38621704 with event index number of 2278101

Geocentric closest approach at 2028/08/14 05:42:48 UTC

J2000 position of star is 18:20:58.7 -29:11:14
Equinox of date position of star is 18:22:26.3 -29:10:30
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 43% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 32.8 AU from the Sun and 32.1 AU from the Earth.
The TNO is moving 13.6 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 249 seconds.
The 1-sigma cross-track error in the shadow position is 1376 km.
The sky-plane scale is 23314.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=346.7 km assuming a 5% albedo -- 21.9 sec chord
Diameter=141.6 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470593, (2028/08/14 05:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:10.0 -26:29:34  0.9 24.77 171
Nunki          18:57:02.3 -26:15:30  2.0  8.12 138
PPM 268436     18:29:39.2 -29:47:48  6.0  1.62 145
PPM 268274     18:22:47.6 -28:41:31  8.4  0.48 146
PPM 268285     18:23:06.7 -29:05:40  9.1  0.10 146
470593         18:22:48.0 -29:10:19 16.4       146
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 3.6 sigma about the mid-time.
The median site spacing is 17.5 km RECON observability=0.3 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)
Kamloops 05:41:53 -17.9 AT Down 9.3 191.5 Really Low 05:26:53 - 05:56:53 8199
Kelowna 05:41:47 -18.9 Dark Down 10.0 192.3 Really Low 05:26:47 - 05:56:47 8176
Peachland 05:41:48 -18.9 Dark Down 10.1 192.1 Really Low 05:26:48 - 05:56:48 8176
Summerland 05:41:47 -19.0 Dark Down 10.3 192.1 Really Low 05:26:47 - 05:56:47 8172
Penticton 05:41:47 -19.1 Dark Down 10.3 192.2 Really Low 05:26:47 - 05:56:47 8169
Victoria 05:42:05 -18.4 Dark Down 11.8 188.9 Really Low 05:27:05 - 05:57:05 8168
Oliver 05:41:47 -19.4 Dark Down 10.7 192.2 Really Low 05:26:47 - 05:56:47 8161
Anarchist Mountain Observatory 05:41:46 -19.6 Dark Down 10.8 192.4 Really Low 05:26:46 - 05:56:46 8157
Okanogan 05:41:46 -20.0 Dark Down 11.5 192.3 Really Low 05:26:46 - 05:56:46 8142
Brewster 05:41:47 -20.2 Dark Down 11.8 192.1 Really Low 05:26:47 - 05:56:47 8137
Manson/Chelan 05:41:48 -20.2 Dark Down 12.0 191.8 Really Low 05:26:48 - 05:56:48 8134
Wenatchee 05:41:48 -20.5 Dark Down 12.5 191.7 Really Low 05:26:48 - 05:56:48 8123
Ellensburg 05:41:49 -20.7 Dark Down 12.9 191.5 Really Low 05:26:49 - 05:56:49 8113
Yakima 05:41:49 -21.0 Dark Down 13.3 191.5 Really Low 05:26:49 - 05:56:49 8102
Toppenish/White Swan 05:41:47 -21.3 Dark Down 13.5 191.6 Really Low 05:26:47 - 05:56:47 8095
Sleaford 05:40:48 -21.1 Dark Up 5.3 203.6 Really Low 05:25:48 - 05:55:48 8082
The Dalles 05:41:51 -21.6 Dark Down 14.4 191.0 Really Low 05:26:51 - 05:56:51 8077
PNWRO 05:41:39 -22.2 Dark Down 13.7 193.0 Really Low 05:26:39 - 05:56:39 8073
Maupin 05:41:49 -21.9 Dark Down 14.8 191.1 Really Low 05:26:49 - 05:56:49 8064
Sisters 05:41:50 -22.4 Dark Down 15.7 190.7 Really Low 05:26:50 - 05:56:50 8040
Bend 05:41:49 -22.7 Dark Down 15.9 190.9 Really Low 05:26:49 - 05:56:49 8031
Oregon Observatory 05:41:49 -22.8 Dark Down 16.1 190.8 Really Low 05:26:49 - 05:56:49 8026
Chiloquin 05:41:51 -23.6 Dark Down 17.5 190.5 Really Low 05:26:51 - 05:56:51 7984
Klamath Falls 05:41:50 -23.9 Dark Down 17.8 190.6 Really Low 05:26:50 - 05:56:50 7971
Cedarville 05:41:40 -25.2 Dark Down 18.2 192.1 Really Low 05:26:40 - 05:56:40 7935
Fall River/Burney 05:41:46 -25.0 Dark Down 18.9 191.0 Really Low 05:26:46 - 05:56:46 7925
Greenville 05:41:43 -25.9 Dark Down 19.7 191.5 Really Low 05:26:43 - 05:56:43 7887
Gimple 05:41:42 -25.9 Dark Down 19.7 191.6 Really Low 05:26:42 - 05:56:42 7886
Quincy 05:41:43 -26.0 Dark Down 19.9 191.5 Really Low 05:26:43 - 05:56:43 7879
Portola 05:41:39 -26.4 Dark Down 20.0 191.9 Really Low 05:26:39 - 05:56:39 7871
Reno 05:41:35 -26.9 Dark Down 20.1 192.5 Low 05:26:35 - 05:56:35 7855
Carson City 05:41:35 -27.2 Dark Down 20.5 192.6 Low 05:26:35 - 05:56:35 7840
Gardnerville 05:41:34 -27.4 Dark Down 20.7 192.7 Low 05:26:34 - 05:56:34 7829
Yerington 05:41:31 -27.6 Dark Down 20.6 193.2 Low 05:26:31 - 05:56:31 7826
Hawthorne 05:41:28 -28.2 Dark Down 20.9 193.7 Low 05:26:28 - 05:56:28 7802
Lee Vining 05:41:30 -28.4 Dark Down 21.6 193.3 Low 05:26:30 - 05:56:30 7783
Bishop 05:41:24 -29.2 Dark Down 22.0 194.0 Low 05:26:24 - 05:56:24 7749
Beatty 05:41:14 -30.4 Dark Down 22.1 195.5 Low 05:26:14 - 05:56:14 7712
Dunrhomin 05:40:14 -32.1 Dark Down 15.9 205.1 Really Low 05:25:14 - 05:55:14 7698
CU-SBO 05:40:14 -32.3 Dark Down 16.2 205.0 Really Low 05:25:14 - 05:55:14 7689
Patrick 05:40:54 -32.9 Dark Down 22.9 198.2 Low 05:25:54 - 05:55:54 7608
Laughlin/Bullhead City 05:40:58 -32.8 Dark Down 23.3 197.6 Low 05:25:58 - 05:55:58 7604
Wildwood 05:41:22 -31.7 Dark Down 25.2 194.1 Low 05:26:22 - 05:56:22 7594
Lake Havasu City 05:40:56 -33.5 Dark Down 23.9 198.0 Low 05:25:56 - 05:55:56 7568
Idyllwild 05:41:09 -32.9 Dark Down 25.2 195.9 Low 05:26:09 - 05:56:09 7558
Calipatria 05:41:00 -34.0 Dark Down 25.5 197.1 Low 05:26:00 - 05:56:00 7511
George/Scottsdale 05:40:39 -35.2 Dark Down 24.0 200.3 Low 05:25:39 - 05:55:39 7495
Yuma 05:40:55 -34.8 Dark Down 25.7 197.9 Low 05:25:55 - 05:55:55 7478
Nikitin 05:44:56 24.6 Sun up Up -27.0 282.2 Not Up 05:29:56 - 05:59:56 7351

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 470593, (2028/08/14 05:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 24.77 171
Nunki          18:55:15.9 -26:17:49  2.0  8.12 138
PPM 268436     18:27:49.5 -29:49:00  6.0  1.62 145
PPM 268274     18:20:58.7 -28:42:26  8.4  0.48 146
PPM 268285     18:21:17.5 -29:06:35  9.1  0.10 146
470593         18:20:58.7 -29:11:14 16.4       146
Positions are for J2000

Event circumstances last updated at 2022/12/05 03:15:25 UT

Marc W. Buie, Southwest Research Institute

RECON