RECON: TNO occultation with 14LO28

Event between 14LO28 and star GA1000:19321216 with event index number of 2506098

Geocentric closest approach at 2025/08/30 06:40:10 UTC

J2000 position of star is 22:09:06.8 +11:06:49
Equinox of date position of star is 22:10:11.4 +11:13:18
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 103 degrees from the moon. Moon is 41% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 39.5 AU from the Sun and 38.6 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 75 seconds.
The 1-sigma cross-track error in the shadow position is 1705 km.
The sky-plane scale is 27986.5 km/arcsec.

The TNO has an absolute magnitude Hv=5.2
Diameter=554.6 km assuming a 5% albedo -- 22.3 sec chord
Diameter=226.4 km assuming a 30% albedo -- 9.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 14LO28, (2025/08/30 06:39UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:18.5 +45:22:23  1.3 38.97  99
Markab         23:06:02.5 +15:20:38  2.5 14.15 117
21 Peg         22:04:34.6 +11:30:41  5.8  1.45 102
PPM 141087     22:08:55.4 +10:52:47  8.1  0.51 103
PPM 141103     22:09:48.0 +11:15:50 10.9  0.14 103
14LO28         22:10:22.6 +11:14:25 13.6       103
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 22.4 km RECON observability=1.0 and success probability=26.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 06:39:53 -28.5 Dark Down 49.4 160.3 Up 06:33:10 - 06:46:35 662
Victoria 06:40:00 -29.0 Dark Down 50.0 153.5 Up 06:33:18 - 06:46:43 661
Kelowna 06:39:54 -28.8 Dark Down 49.8 159.9 Up 06:33:12 - 06:46:37 636
Peachland 06:39:55 -28.8 Dark Down 49.8 159.4 Up 06:33:13 - 06:46:38 636
Summerland 06:39:55 -29.0 Dark Down 50.0 159.5 Up 06:33:13 - 06:46:38 622
Penticton 06:39:55 -29.1 Dark Down 50.1 159.7 Up 06:33:13 - 06:46:38 614
Oliver 06:39:56 -29.4 Dark Down 50.4 159.5 Up 06:33:13 - 06:46:38 587
Anarchist Mountain Observatory 06:39:55 -29.6 Dark Down 50.6 159.7 Up 06:33:13 - 06:46:38 569
Tonasket 06:39:56 -29.9 Dark Down 50.9 159.5 Up 06:33:14 - 06:46:39 547
Okanogan 06:39:57 -30.2 Dark Down 51.2 159.1 Up 06:33:15 - 06:46:40 525
Brewster 06:39:58 -30.4 Dark Down 51.4 158.7 Up 06:33:16 - 06:46:41 509
Manson/Chelan 06:40:00 -30.5 Dark Down 51.5 158.1 Up 06:33:17 - 06:46:42 503
Wenatchee 06:40:00 -30.8 Dark Down 51.9 157.6 Up 06:33:18 - 06:46:43 471
Ellensburg 06:40:00 -31.2 Dark Down 52.2 157.0 Up 06:33:18 - 06:46:43 447
Yakima 06:40:00 -31.5 Dark Down 52.6 156.8 Up 06:33:18 - 06:46:43 419
Toppenish/White Swan 06:40:00 -31.8 Dark Down 52.8 157.0 Up 06:33:18 - 06:46:43 398
The Dalles 06:40:00 -32.2 Dark Down 53.3 155.3 Up 06:33:18 - 06:46:43 389
Goldendale 06:40:00 -32.2 Dark Down 53.2 156.0 Up 06:33:18 - 06:46:43 382
Maupin 06:40:00 -32.7 Dark Down 53.7 155.2 Up 06:33:18 - 06:46:43 363
Pasco 06:40:00 -32.2 Dark Down 53.2 158.9 Up 06:33:17 - 06:46:42 346
PNWRO 06:40:00 -32.5 Dark Down 53.5 159.1 Up 06:33:17 - 06:46:42 320
Sisters 06:40:11 -33.3 Dark Down 54.4 154.0 Up 06:33:28 - 06:46:53 256
Redmond 06:40:10 -33.5 Dark Down 54.5 154.6 Up 06:33:27 - 06:46:52 243
Bend 06:40:10 -33.6 Dark Down 54.7 154.3 Up 06:33:28 - 06:46:53 230
Oregon Observatory 06:40:11 -33.7 Dark Down 54.8 153.9 Up 06:33:28 - 06:46:53 219
La Pine/Gilchrist 06:40:12 -33.9 Dark Down 54.9 153.7 Up 06:33:29 - 06:46:54 204
North Lake 06:40:11 -34.5 Dark Down 55.5 154.4 Up 06:33:28 - 06:46:53 151
Chiloquin 06:40:15 -34.8 Dark Down 55.8 152.4 Up 06:33:32 - 06:46:57 123
Paisley 06:40:11 -35.1 Dark Down 56.1 154.7 Up 06:33:28 - 06:46:53 95
Klamath Falls 06:40:15 -35.1 Dark Down 56.1 152.3 Up 06:33:33 - 06:46:58 92
Lakeview 06:40:11 -35.6 Dark Down 56.6 154.7 Up 06:33:29 - 06:46:54 47
Cedarville 06:40:12 -36.3 Dark Down 57.3 154.5 Up 06:33:29 - 06:46:54 -14
Fall River/Burney 06:40:16 -36.3 Dark Down 57.3 152.1 Up 06:33:34 - 06:46:59 -19
Susanville 06:40:15 -37.1 Dark Down 58.1 153.0 Up 06:33:33 - 06:46:58 -95
Greenville 06:40:17 -37.3 Dark Down 58.3 152.2 Up 06:33:34 - 06:46:59 -110
Gimple 06:40:16 -37.3 Dark Down 58.3 152.4 Up 06:33:34 - 06:46:59 -112
Quincy 06:40:17 -37.4 Dark Down 58.5 152.1 Up 06:33:35 - 06:47:00 -127
Portola 06:40:16 -37.7 Dark Down 58.7 152.8 Up 06:33:33 - 06:46:58 -152
Reno 06:40:14 -38.2 Dark Down 59.2 153.8 Up 06:33:32 - 06:46:57 -195
Carson City 06:40:15 -38.5 Dark Down 59.5 153.6 Up 06:33:33 - 06:46:58 -227
Gardnerville 06:40:15 -38.7 Dark Down 59.8 153.5 Up 06:33:33 - 06:46:58 -250
Yerington 06:40:13 -38.9 Dark Down 59.9 154.6 Up 06:33:31 - 06:46:56 -264
Hawthorne 06:40:13 -39.5 Dark Down 60.5 155.2 Up 06:33:30 - 06:46:55 -321
Lee Vining 06:40:15 -39.8 Dark Down 60.9 153.9 Up 06:33:33 - 06:46:58 -355
Tonopah 06:40:09 -40.3 Dark Down 61.4 157.5 Up 06:33:26 - 06:46:51 -405
Bishop 06:40:14 -40.6 Dark Down 61.7 154.8 Up 06:33:32 - 06:46:57 -432
Beatty 06:40:09 -41.6 Dark Down 62.6 157.6 Up 06:33:27 - 06:46:52 -524
CPSLO 06:40:25 -41.7 Dark Down 62.6 148.6 Up 06:33:43 - 06:47:08 -546
Dunrhomin 06:39:27 -40.6 Dark Down 60.8 182.3 Up 06:32:44 - 06:46:09 -551
Indian Springs 06:40:07 -42.2 Dark Down 63.2 159.6 Up 06:33:24 - 06:46:49 -587
Henderson 06:40:00 -42.9 Dark Down 63.9 160.6 Up 06:33:18 - 06:46:43 -669
Wildwood 06:40:20 -43.5 Dark Down 64.5 151.5 Up 06:33:38 - 06:47:03 -723
Patrick 06:40:00 -43.8 Dark Down 64.8 162.7 Up 06:33:18 - 06:46:43 -752
Laughlin/Bullhead City 06:40:00 -43.8 Dark Down 64.8 160.9 Up 06:33:18 - 06:46:43 -761
Kingman/Dolan Springs 06:40:00 -43.9 Dark Down 64.9 162.1 Up 06:33:18 - 06:46:43 -769
Mohave Valley 06:40:00 -44.1 Dark Down 65.1 160.8 Up 06:33:18 - 06:46:43 -788
Idyllwild 06:40:14 -44.5 Dark Down 65.5 155.2 Up 06:33:32 - 06:46:57 -817
Lake Havasu City 06:40:00 -44.5 Dark Down 65.5 161.0 Up 06:33:18 - 06:46:43 -832
Parker 06:40:00 -44.8 Dark Down 65.9 160.9 Up 06:33:18 - 06:46:43 -867
Blythe 06:40:08 -45.3 Dark Down 66.3 159.8 Up 06:33:25 - 06:46:50 -896
Calipatria 06:40:12 -45.4 Dark Down 66.5 157.3 Up 06:33:29 - 06:46:54 -913
George/Scottsdale 06:39:58 -45.9 Dark Down 66.9 166.4 Up 06:33:16 - 06:46:41 -972
Yuma 06:40:09 -46.1 Dark Down 67.2 159.0 Up 06:33:27 - 06:46:52 -982

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 14LO28, (2025/08/30 06:39UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 38.97  99
Markab         23:04:45.8 +15:12:18  2.5 14.15 117
21 Peg         22:03:19.1 +11:23:11  5.8  1.45 102
PPM 141087     22:07:39.6 +10:45:13  8.1  0.51 103
PPM 141103     22:08:32.2 +11:08:14 10.9  0.14 103
14LO28         22:09:06.8 +11:06:49 13.6       103
Positions are for J2000

Event circumstances last updated at 2021/11/12 22:05:50 UT

Marc W. Buie, Southwest Research Institute

RECON