RECON: TNO occultation with 15788

Event between (15788) 93SB and star GA1140:01028178 with event index number of 1387747

Geocentric closest approach at 2025/03/27 04:57:24 UTC

J2000 position of star is 05:10:53.7 +24:52:42
Equinox of date position of star is 05:12:05.3 +24:54:04
Stellar brightness G=14.5, use SENSEUP=128
Star is 103 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 26.8 AU from the Sun and 27.1 AU from the Earth.
The TNO is moving 15.2 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 2683 seconds.
The 1-sigma cross-track error in the shadow position is 5348 km.
The sky-plane scale is 19642.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 10.4 sec chord
Diameter=64.7 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15788, (2025/03/27 04:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:22.3 +16:33:30  0.8 11.69  94
Alnath         05:27:53.3 +28:37:36  1.6  5.07 107
103 Tau        05:09:39.1 +24:17:46  5.3  0.88 103
PPM 094178     05:14:36.0 +24:25:30  8.4  0.69 104
PPM 094145     05:12:22.7 +24:53:57 10.0  0.02 103
15788          05:12:26.6 +24:54:28 14.5       104
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 0.3 sigma about the mid-time.
The median site spacing is 16.3 km RECON observability=1.0 and success probability=7.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:01:29 -24.6 Dark Down 35.9 267.0 Up 04:46:29 - 05:16:29 1844
Summerland 05:01:30 -24.6 Dark Down 36.1 267.0 Up 04:46:30 - 05:16:30 1812
Penticton 05:01:30 -24.7 Dark Down 36.0 267.1 Up 04:46:30 - 05:16:30 1809
Okanagan Falls 05:01:32 -24.9 Dark Down 36.0 267.3 Up 04:46:32 - 05:16:32 1793
Oliver 05:01:33 -25.0 Dark Down 36.0 267.4 Up 04:46:33 - 05:16:33 1780
Anarchist Mountain Observatory 05:01:34 -25.2 Dark Down 35.9 267.7 Up 04:46:34 - 05:16:34 1771
Oroville 05:01:34 -25.2 Dark Down 35.9 267.7 Up 04:46:34 - 05:16:34 1762
Tonasket 05:01:34 -25.3 Dark Down 35.9 267.8 Up 04:46:34 - 05:16:34 1743
Okanogan 05:01:36 -25.5 Dark Down 36.0 268.0 Up 04:46:36 - 05:16:36 1711
Brewster 05:01:37 -25.5 Dark Down 36.2 268.0 Up 04:46:37 - 05:16:37 1682
Manson/Chelan 05:01:37 -25.5 Dark Down 36.4 267.9 Up 04:46:37 - 05:16:37 1655
Entiat 05:01:38 -25.5 Dark Down 36.5 268.0 Up 04:46:38 - 05:16:38 1634
Wenatchee 05:01:39 -25.7 Dark Down 36.6 268.1 Up 04:46:39 - 05:16:39 1610
Ellensburg 05:01:40 -25.8 Dark Down 36.7 268.3 Up 04:46:40 - 05:16:40 1568
Pasco 05:01:47 -27.0 Dark Down 35.7 269.9 Up 04:46:47 - 05:16:47 1544
Yakima 05:01:42 -26.0 Dark Down 36.7 268.6 Up 04:46:42 - 05:16:42 1532
PNWRO 05:01:49 -27.3 Dark Down 35.6 270.2 Up 04:46:49 - 05:16:49 1529
Toppenish/White Swan 05:01:44 -26.2 Dark Down 36.6 268.9 Up 04:46:44 - 05:16:44 1519
George/Umatilla 05:01:48 -27.1 Dark Down 35.9 270.0 Up 04:46:48 - 05:16:48 1509
Niwot 05:02:41 -38.7 Dark Down 24.8 282.5 Low 04:47:41 - 05:17:41 1465
Goldendale 05:01:45 -26.3 Dark Down 36.9 269.0 Up 04:46:45 - 05:16:45 1459
SwRI 05:02:41 -38.8 Dark Down 24.8 282.5 Low 04:47:41 - 05:17:41 1453
The Dalles 05:01:45 -26.3 Dark Down 37.2 268.9 Up 04:46:45 - 05:16:45 1428
Maupin 05:01:47 -26.6 Dark Down 37.1 269.3 Up 04:46:47 - 05:16:47 1395
Madras/Culver 05:01:50 -26.9 Dark Down 37.1 269.7 Up 04:46:50 - 05:16:50 1345
Redmond 05:01:51 -27.0 Dark Down 37.2 269.9 Up 04:46:51 - 05:16:51 1312
Sisters 05:01:50 -26.8 Dark Down 37.5 269.6 Up 04:46:50 - 05:16:50 1303
Bend 05:01:52 -27.1 Dark Down 37.3 270.0 Up 04:46:52 - 05:16:52 1289
Oregon Observatory 05:01:52 -27.1 Dark Down 37.4 270.0 Up 04:46:52 - 05:16:52 1270
La Pine/Gilchrist 05:01:53 -27.2 Dark Down 37.4 270.1 Up 04:46:53 - 05:16:53 1250
North Lake 05:01:56 -27.8 Dark Down 36.9 270.9 Up 04:46:56 - 05:16:56 1228
Paisley 05:02:00 -28.3 Dark Down 36.7 271.5 Up 04:47:00 - 05:17:00 1190
Lakeview 05:02:02 -28.7 Dark Down 36.5 272.0 Up 04:47:02 - 05:17:02 1150
Chiloquin 05:01:57 -27.6 Dark Down 37.6 270.7 Up 04:46:57 - 05:16:57 1139
Klamath Falls 05:01:58 -27.8 Dark Down 37.6 271.1 Up 04:46:58 - 05:16:58 1110
Cedarville 05:02:06 -29.2 Dark Down 36.3 272.7 Up 04:47:06 - 05:17:06 1096
Tulelake 05:02:01 -28.2 Dark Down 37.3 271.5 Up 04:47:01 - 05:17:01 1095
Fall River/Burney 05:02:04 -28.7 Dark Down 37.2 272.2 Up 04:47:04 - 05:17:04 1014
Susanville 05:02:09 -29.6 Dark Down 36.6 273.2 Up 04:47:09 - 05:17:09 979
Gimple 05:02:10 -29.6 Dark Down 36.8 273.3 Up 04:47:10 - 05:17:10 947
Greenville 05:02:09 -29.5 Dark Down 36.8 273.2 Up 04:47:09 - 05:17:09 945
Portola 05:02:12 -30.0 Dark Down 36.4 273.8 Up 04:47:12 - 05:17:12 929
Quincy 05:02:10 -29.7 Dark Down 36.8 273.4 Up 04:47:10 - 05:17:10 926
Reno 05:02:15 -30.6 Dark Down 35.9 274.3 Up 04:47:15 - 05:17:15 925
Yerington 05:02:19 -31.3 Dark Down 35.3 275.1 Up 04:47:19 - 05:17:19 895
Carson City 05:02:16 -30.8 Dark Down 35.9 274.6 Up 04:47:16 - 05:17:16 893
Tonopah 05:02:28 -33.2 Dark Down 33.7 276.9 Up 04:47:28 - 05:17:28 873
Gardnerville 05:02:17 -31.0 Dark Down 35.8 274.8 Up 04:47:17 - 05:17:17 872
Hawthorne 05:02:22 -32.0 Dark Down 34.9 275.8 Up 04:47:22 - 05:17:22 869
Lee Vining 05:02:23 -32.0 Dark Down 35.2 275.9 Up 04:47:23 - 05:17:23 801
Indian Springs 05:02:37 -35.0 Dark Down 32.3 278.7 Up 04:47:37 - 05:17:37 787
Beatty 05:02:34 -34.1 Dark Down 33.2 277.9 Up 04:47:34 - 05:17:34 781
Bishop 05:02:27 -32.8 Dark Down 34.5 276.7 Up 04:47:27 - 05:17:27 769
Henderson 05:02:41 -35.8 Dark Down 31.6 279.4 Up 04:47:41 - 05:17:41 762
Patrick 05:02:46 -36.9 Dark Down 30.6 280.3 Up 04:47:46 - 05:17:46 743
DCO 05:02:49 -37.6 Dark Down 30.0 280.9 Low 04:47:49 - 05:17:49 740
Kingman/Dolan Springs 05:02:46 -36.9 Dark Down 30.7 280.4 Up 04:47:46 - 05:17:46 716
Searchlight/Boulder City 05:02:43 -36.2 Dark Down 31.5 279.8 Up 04:47:43 - 05:17:43 711
Lone Pine 05:02:31 -33.4 Dark Down 34.2 277.4 Up 04:47:31 - 05:17:31 709
Laughlin/Bullhead City 05:02:45 -36.6 Dark Down 31.1 280.1 Up 04:47:45 - 05:17:45 695
Mohave Valley 05:02:46 -36.8 Dark Down 31.1 280.3 Up 04:47:46 - 05:17:46 670
Lake Havasu City 05:02:49 -37.2 Dark Down 30.8 280.7 Up 04:47:49 - 05:17:49 642
Parker 05:02:50 -37.4 Dark Down 30.7 280.9 Up 04:47:50 - 05:17:50 610
Blythe 05:02:51 -37.5 Dark Down 30.8 281.0 Up 04:47:51 - 05:17:51 550
CPSLO 05:02:29 -32.4 Dark Down 36.1 277.0 Up 04:47:29 - 05:17:29 500
Idyllwild 05:02:46 -36.0 Dark Down 32.6 280.0 Up 04:47:46 - 05:17:46 485
Calipatria 05:02:51 -37.2 Dark Down 31.5 280.9 Up 04:47:51 - 05:17:51 470
Yuma 05:02:54 -38.1 Dark Down 30.7 281.6 Up 04:47:54 - 05:17:54 461
Wildwood 05:02:39 -34.5 Dark Down 34.2 278.9 Up 04:47:39 - 05:17:39 454

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 15788, (2025/03/27 04:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 11.69  94
Alnath         05:26:17.5 +28:36:23  1.6  5.07 107
103 Tau        05:08:06.6 +24:15:54  5.3  0.88 103
PPM 094178     05:13:03.4 +24:23:49  8.4  0.69 104
PPM 094145     05:10:49.8 +24:52:11 10.0  0.02 103
15788          05:10:53.7 +24:52:42 14.5       103
Positions are for J2000

Event circumstances last updated at 2019/06/08 10:44:27 UT

Marc W. Buie, Southwest Research Institute

RECON