RECON: TNO occultation with 14YG50

Event between 14YG50 and star GA1080:03078586 with event index number of 1497814

Geocentric closest approach at 2026/01/28 08:07:23 UTC

J2000 position of star is 08:24:31.6 +19:14:45
Equinox of date position of star is 08:25:37.9 +19:10:57
Stellar brightness G=15.3, use SENSEUP=128
Star is 57 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 35.7 AU from the Sun and 34.7 AU from the Earth.
The TNO is moving 25.4 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is 1747 km.
The sky-plane scale is 25188.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 8.9 sec chord
Diameter=91.8 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14YG50, (2026/01/28 08:07UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:54.8 +27:57:40  1.1 12.55  46
20 Cnc         08:24:51.3 +18:14:48  5.9  0.95  57
PPM 125249     08:27:20.2 +19:31:06  8.5  0.47  57
PPM 125237     08:26:19.6 +19:05:03  9.7  0.10  57
14YG50         08:26:01.5 +19:09:35 15.3        58
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 22.0 km RECON observability=1.0 and success probability=18.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:07:35 -58.3 Dark Up 59.2 187.4 Up 07:59:56 - 08:15:14 -1317
Summerland 08:07:36 -58.6 Dark Up 59.5 186.9 Up 07:59:57 - 08:15:15 -1348
Penticton 08:07:35 -58.6 Dark Up 59.6 187.1 Up 07:59:56 - 08:15:14 -1353
Okanagan Falls 08:07:35 -58.8 Dark Up 59.7 187.1 Up 07:59:56 - 08:15:14 -1371
Oliver 08:07:35 -59.0 Dark Up 59.9 187.2 Up 07:59:56 - 08:15:14 -1386
Anarchist Mountain Observatory 08:07:34 -59.1 Dark Up 60.1 187.6 Up 07:59:55 - 08:15:13 -1400
Oroville 08:07:35 -59.2 Dark Up 60.1 187.5 Up 07:59:56 - 08:15:14 -1408
Tonasket 08:07:34 -59.5 Dark Up 60.4 187.5 Up 07:59:55 - 08:15:13 -1430
Okanogan 08:07:34 -59.8 Dark Up 60.7 187.3 Up 07:59:55 - 08:15:13 -1464
Brewster 08:07:35 -60.1 Dark Up 61.0 187.0 Up 07:59:56 - 08:15:14 -1492
Manson/Chelan 08:07:35 -60.3 Dark Up 61.2 186.3 Up 07:59:56 - 08:15:14 -1517
Entiat 08:07:35 -60.5 Dark Up 61.5 186.2 Up 07:59:56 - 08:15:14 -1539
Wenatchee 08:07:36 -60.7 Dark Up 61.7 186.1 Up 07:59:57 - 08:15:15 -1565
Ellensburg 08:07:36 -61.1 Dark Up 62.2 185.7 Up 07:59:57 - 08:15:15 -1608
Yakima 08:07:36 -61.5 Dark Up 62.6 185.8 Up 07:59:57 - 08:15:15 -1647
Pasco 08:07:31 -61.9 Dark Up 62.8 188.8 Up 07:59:52 - 08:15:10 -1659
Toppenish/White Swan 08:07:35 -61.8 Dark Up 62.8 186.1 Up 07:59:56 - 08:15:14 -1666
PNWRO 08:07:31 -62.2 Dark Up 63.0 189.3 Up 07:59:52 - 08:15:10 -1680
George/Umatilla 08:07:32 -62.2 Dark Up 63.1 188.4 Up 07:59:53 - 08:15:11 -1695
Goldendale 08:07:36 -62.3 Dark Up 63.3 185.4 Up 07:59:57 - 08:15:15 -1725
The Dalles 08:07:37 -62.5 Dark Up 63.6 184.7 Up 07:59:58 - 08:15:16 -1753
Maupin 08:07:37 -62.9 Dark Up 64.0 185.0 Up 07:59:58 - 08:15:16 -1792
Madras/Culver 08:07:36 -63.5 Dark Up 64.5 185.0 Up 07:59:57 - 08:15:15 -1846
Redmond 08:07:36 -63.8 Dark Up 64.9 184.9 Up 07:59:57 - 08:15:15 -1882
Sisters 08:07:37 -63.8 Dark Up 64.9 184.0 Up 07:59:58 - 08:15:16 -1886
Bend 08:07:36 -64.0 Dark Up 65.1 184.6 Up 07:59:57 - 08:15:15 -1905
Oregon Observatory 08:07:36 -64.2 Dark Up 65.3 184.4 Up 07:59:57 - 08:15:15 -1925
La Pine/Gilchrist 08:07:37 -64.4 Dark Up 65.5 184.3 Up 07:59:58 - 08:15:16 -1946
North Lake 08:07:34 -64.8 Dark Up 65.9 185.7 Up 07:59:55 - 08:15:13 -1980
Niwot 08:06:42 -65.2 Dark Up 64.0 221.8 Up 07:59:03 - 08:14:21 -1999
SwRI 08:06:42 -65.4 Dark Up 64.2 221.7 Up 07:59:03 - 08:14:21 -2012
Paisley 08:07:33 -65.4 Dark Up 66.4 186.7 Up 07:59:54 - 08:15:12 -2030
Chiloquin 08:07:37 -65.4 Dark Up 66.6 183.6 Up 07:59:58 - 08:15:16 -2062
Lakeview 08:07:31 -65.9 Dark Up 66.9 187.3 Up 07:59:52 - 08:15:10 -2078
Klamath Falls 08:07:37 -65.8 Dark Up 67.0 183.9 Up 07:59:58 - 08:15:16 -2095
Tulelake 08:07:35 -66.1 Dark Up 67.2 184.6 Up 07:59:56 - 08:15:14 -2118
Cedarville 08:07:31 -66.6 Dark Up 67.6 187.9 Up 07:59:52 - 08:15:10 -2141
Fall River/Burney 08:07:34 -67.0 Dark Up 68.1 185.0 Up 07:59:55 - 08:15:13 -2208
Susanville 08:07:31 -67.7 Dark Up 68.7 187.0 Up 07:59:52 - 08:15:10 -2261
Gimple 08:07:32 -67.9 Dark Up 69.0 186.6 Up 07:59:53 - 08:15:11 -2292
Greenville 08:07:32 -67.9 Dark Up 69.0 186.4 Up 07:59:53 - 08:15:11 -2293
Quincy 08:07:32 -68.1 Dark Up 69.2 186.4 Up 07:59:53 - 08:15:11 -2314
Portola 08:07:30 -68.3 Dark Up 69.3 187.7 Up 07:59:51 - 08:15:09 -2319
Reno 08:07:28 -68.6 Dark Up 69.5 189.5 Up 07:59:49 - 08:15:07 -2336
Carson City 08:07:27 -69.0 Dark Up 69.8 189.7 Up 07:59:48 - 08:15:06 -2372
Yerington 08:07:25 -69.2 Dark Up 69.9 191.5 Up 07:59:46 - 08:15:04 -2382
Gardnerville 08:07:27 -69.2 Dark Up 70.1 190.0 Up 07:59:48 - 08:15:06 -2397
Hawthorne 08:07:23 -69.6 Dark Up 70.3 193.2 Up 07:59:44 - 08:15:02 -2421
Tonopah 08:07:18 -70.1 Dark Up 70.5 197.4 Up 07:59:39 - 08:14:57 -2444
Lee Vining 08:07:24 -70.2 Dark Up 70.9 192.2 Up 07:59:45 - 08:15:03 -2487
Bishop 08:07:21 -70.8 Dark Up 71.4 194.7 Up 07:59:42 - 08:15:00 -2536
Beatty 08:07:16 -71.2 Dark Up 71.4 199.7 Up 07:59:37 - 08:14:55 -2555
Indian Springs 08:07:11 -71.4 Dark Up 71.4 203.1 Up 07:59:32 - 08:14:50 -2568
Lone Pine 08:07:20 -71.6 Dark Up 72.0 196.3 Up 07:59:41 - 08:14:59 -2609
Henderson 08:07:08 -71.8 Dark Up 71.7 205.6 Up 07:59:29 - 08:14:47 -2610
Patrick 08:07:04 -72.3 Dark Up 71.8 209.6 Up 07:59:25 - 08:14:43 -2653
Searchlight/Boulder City 08:07:08 -72.4 Dark Up 72.2 206.6 Up 07:59:29 - 08:14:47 -2668
DCO 08:07:02 -72.4 Dark Up 71.8 212.0 Up 07:59:23 - 08:14:41 -2671
Kingman/Dolan Springs 08:07:05 -72.5 Dark Up 72.1 209.4 Up 07:59:26 - 08:14:44 -2680
Laughlin/Bullhead City 08:07:06 -72.6 Dark Up 72.3 208.0 Up 07:59:27 - 08:14:45 -2692
Mohave Valley 08:07:06 -72.9 Dark Up 72.6 208.4 Up 07:59:27 - 08:14:45 -2720
Lake Havasu City 08:07:05 -73.2 Dark Up 72.8 209.7 Up 07:59:26 - 08:14:44 -2757
CPSLO 08:07:28 -72.8 Dark Up 73.8 189.1 Up 07:59:49 - 08:15:07 -2788
Parker 08:07:04 -73.6 Dark Up 73.1 210.4 Up 07:59:25 - 08:14:43 -2793
Blythe 08:07:04 -74.1 Dark Up 73.7 210.4 Up 07:59:25 - 08:14:43 -2853
Wildwood 08:07:19 -74.1 Dark Up 74.6 196.9 Up 07:59:40 - 08:14:58 -2879
Idyllwild 08:07:12 -74.3 Dark Up 74.4 203.6 Up 07:59:33 - 08:14:51 -2882
Calipatria 08:07:07 -74.8 Dark Up 74.5 208.4 Up 07:59:28 - 08:14:46 -2923
Yuma 08:07:04 -75.0 Dark Up 74.5 211.9 Up 07:59:25 - 08:14:43 -2951

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 14YG50, (2026/01/28 08:07UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 12.55  46
20 Cnc         08:23:21.8 +18:19:55  5.9  0.95  57
PPM 125249     08:25:50.1 +19:36:18  8.5  0.47  57
PPM 125237     08:24:49.7 +19:10:13  9.7  0.10  57
14YG50         08:24:31.6 +19:14:45 15.3        57
Positions are for J2000

Event circumstances last updated at 2019/03/25 01:18:19 UT

Marc W. Buie, Southwest Research Institute

RECON