RECON: TNO occultation with 00YE2

Event between 00YE2 and star GA1100:02192615 with event index number of 1438496

Geocentric closest approach at 2025/12/12 04:25:14 UTC

J2000 position of star is 06:33:07.6 +20:05:39
Equinox of date position of star is 06:34:16.0 +20:04:43
Stellar brightness G=14.4, use SENSEUP=128
Star is 76 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 38.2 AU from the Sun and 37.2 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 532 seconds.
The 1-sigma cross-track error in the shadow position is 2570 km.
The sky-plane scale is 26994.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.7 km assuming a 5% albedo -- 5.7 sec chord
Diameter=54.6 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 00YE2, (2025/12/12 04:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:34.6 +07:24:35  0.4 15.67  85
Alhena         06:39:12.6 +16:22:30  1.9  3.85  75
18Nu Gem       06:30:30.2 +20:11:36  4.1  0.98  77
PPM 122657     06:34:48.5 +19:49:21  7.8  0.25  76
PPM 096144     06:34:37.5 +20:02:36 10.4  0.03  76
00YE2          06:34:39.9 +20:04:23 14.4        76
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 1.7 sigma about the mid-time.
The median site spacing is 17.8 km RECON observability=1.0 and success probability=15.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 04:28:03 -42.4 Dark Down 28.3 92.0 Low 04:13:03 - 04:43:03 -1182
Summerland 04:28:04 -42.3 Dark Down 28.2 91.6 Low 04:13:04 - 04:43:04 -1200
Penticton 04:28:05 -42.4 Dark Down 28.2 91.6 Low 04:13:05 - 04:43:05 -1208
Okanagan Falls 04:28:05 -42.4 Dark Down 28.2 91.5 Low 04:13:05 - 04:43:05 -1222
Oliver 04:28:06 -42.5 Dark Down 28.2 91.4 Low 04:13:06 - 04:43:06 -1236
Anarchist Mountain Observatory 04:28:06 -42.7 Dark Down 28.4 91.5 Low 04:13:06 - 04:43:06 -1254
Oroville 04:28:06 -42.6 Dark Down 28.3 91.4 Low 04:13:06 - 04:43:06 -1259
Tonasket 04:28:07 -42.7 Dark Down 28.3 91.3 Low 04:13:07 - 04:43:07 -1278
Okanogan 04:28:08 -42.7 Dark Down 28.2 91.0 Low 04:13:08 - 04:43:08 -1302
Brewster 04:28:09 -42.6 Dark Down 28.1 90.7 Low 04:13:09 - 04:43:09 -1319
Manson/Chelan 04:28:10 -42.4 Dark Down 27.9 90.3 Low 04:13:10 - 04:43:10 -1328
Entiat 04:28:11 -42.4 Dark Down 27.8 90.1 Low 04:13:11 - 04:43:11 -1344
Wenatchee 04:28:12 -42.4 Dark Down 27.8 89.9 Low 04:13:12 - 04:43:12 -1363
Ellensburg 04:28:14 -42.4 Dark Down 27.6 89.6 Low 04:13:14 - 04:43:14 -1392
Yakima 04:28:15 -42.4 Dark Down 27.6 89.3 Low 04:13:15 - 04:43:15 -1425
Toppenish/White Swan 04:28:15 -42.6 Dark Down 27.7 89.4 Low 04:13:15 - 04:43:15 -1447
Goldendale 04:28:18 -42.4 Dark Down 27.4 88.8 Low 04:13:18 - 04:43:18 -1483
Pasco 04:28:14 -43.5 Dark Down 28.6 90.2 Low 04:13:14 - 04:43:14 -1488
The Dalles 04:28:19 -42.2 Dark Down 27.2 88.4 Low 04:13:19 - 04:43:19 -1493
George/Umatilla 04:28:16 -43.4 Dark Down 28.5 89.9 Low 04:13:16 - 04:43:16 -1511
PNWRO 04:28:15 -43.7 Dark Down 28.8 90.2 Low 04:13:15 - 04:43:15 -1514
Maupin 04:28:20 -42.4 Dark Down 27.2 88.3 Low 04:13:20 - 04:43:20 -1531
Madras/Culver 04:28:22 -42.4 Dark Down 27.2 88.0 Low 04:13:22 - 04:43:22 -1577
Sisters 04:28:23 -42.2 Dark Down 26.9 87.5 Low 04:13:23 - 04:43:23 -1594
Redmond 04:28:23 -42.4 Dark Down 27.1 87.7 Low 04:13:23 - 04:43:23 -1606
Bend 04:28:24 -42.4 Dark Down 27.0 87.5 Low 04:13:24 - 04:43:24 -1621
Oregon Observatory 04:28:24 -42.3 Dark Down 26.9 87.4 Low 04:13:24 - 04:43:24 -1632
La Pine/Gilchrist 04:28:25 -42.3 Dark Down 26.9 87.2 Low 04:13:25 - 04:43:25 -1649
North Lake 04:28:25 -42.8 Dark Down 27.3 87.4 Low 04:13:25 - 04:43:25 -1701
Chiloquin 04:28:29 -42.2 Dark Down 26.6 86.4 Low 04:13:29 - 04:43:29 -1736
Paisley 04:28:27 -43.1 Dark Down 27.5 87.4 Low 04:13:27 - 04:43:27 -1759
Klamath Falls 04:28:29 -42.3 Dark Down 26.6 86.3 Low 04:13:29 - 04:43:29 -1768
Tulelake 04:28:30 -42.5 Dark Down 26.8 86.4 Low 04:13:30 - 04:43:30 -1799
Lakeview 04:28:28 -43.3 Dark Down 27.7 87.2 Low 04:13:28 - 04:43:28 -1808
Cedarville 04:28:29 -43.6 Dark Down 27.8 87.0 Low 04:13:29 - 04:43:29 -1871
Fall River/Burney 04:28:32 -42.7 Dark Down 26.8 86.0 Low 04:13:32 - 04:43:32 -1882
Susanville 04:28:33 -43.3 Dark Down 27.4 86.1 Low 04:13:33 - 04:43:33 -1958
Greenville 04:28:34 -43.1 Dark Down 27.1 85.8 Low 04:13:34 - 04:43:34 -1975
Gimple 04:28:34 -43.2 Dark Down 27.2 85.9 Low 04:13:34 - 04:43:34 -1977
Quincy 04:28:35 -43.1 Dark Down 27.1 85.7 Low 04:13:35 - 04:43:35 -1993
Portola 04:28:35 -43.5 Dark Down 27.5 85.9 Low 04:13:35 - 04:43:35 -2017
Reno 04:28:34 -44.0 Dark Down 27.9 86.2 Low 04:13:34 - 04:43:34 -2059
Carson City 04:28:36 -44.1 Dark Down 27.9 86.0 Low 04:13:36 - 04:43:36 -2092
Gardnerville 04:28:36 -44.2 Dark Down 28.0 85.9 Low 04:13:36 - 04:43:36 -2116
Yerington 04:28:35 -44.6 Dark Down 28.4 86.3 Low 04:13:35 - 04:43:35 -2127
Hawthorne 04:28:36 -45.1 Dark Down 28.8 86.4 Low 04:13:36 - 04:43:36 -2184
Lee Vining 04:28:38 -44.7 Dark Down 28.4 85.8 Low 04:13:38 - 04:43:38 -2223
Tonopah 04:28:35 -46.2 Dark Down 29.9 86.9 Low 04:13:35 - 04:43:35 -2265
Bishop 04:28:38 -45.3 Dark Down 28.9 85.9 Low 04:13:38 - 04:43:38 -2298
Niwot 04:28:09 -54.9 Dark Down 39.1 96.1 Up 04:13:09 - 04:43:09 -2369
SwRI 04:28:09 -54.8 Dark Down 39.0 95.9 Up 04:13:09 - 04:43:09 -2376
Lone Pine 04:28:40 -45.7 Dark Down 29.1 85.6 Low 04:13:40 - 04:43:40 -2379
Beatty 04:28:37 -46.7 Dark Down 30.2 86.5 Up 04:13:37 - 04:43:37 -2386
CPSLO 04:28:46 -43.6 Dark Down 26.9 83.5 Low 04:13:46 - 04:43:46 -2428
Indian Springs 04:28:36 -47.6 Dark Down 31.0 87.0 Up 04:13:36 - 04:43:36 -2446
Henderson 04:28:36 -48.2 Dark Down 31.6 87.0 Up 04:13:36 - 04:43:36 -2515
Searchlight/Boulder City 04:28:38 -48.3 Dark Down 31.6 86.7 Up 04:13:38 - 04:43:38 -2572
Wildwood 04:28:46 -45.3 Dark Down 28.5 84.0 Low 04:13:46 - 04:43:46 -2602
Patrick 04:28:36 -49.1 Dark Down 32.4 87.3 Up 04:13:36 - 04:43:36 -2606
Laughlin/Bullhead City 04:28:38 -48.6 Dark Down 31.8 86.7 Up 04:13:38 - 04:43:38 -2610
Kingman/Dolan Springs 04:28:37 -49.0 Dark Down 32.3 87.0 Up 04:13:37 - 04:43:37 -2622
Mohave Valley 04:28:38 -48.6 Dark Down 31.8 86.6 Up 04:13:38 - 04:43:38 -2637
DCO 04:28:36 -49.7 Dark Down 33.0 87.5 Up 04:13:36 - 04:43:36 -2654
Lake Havasu City 04:28:39 -48.8 Dark Down 32.0 86.4 Up 04:13:39 - 04:43:39 -2682
Idyllwild 04:28:45 -46.9 Dark Down 30.0 84.8 Up 04:13:45 - 04:43:45 -2690
Parker 04:28:40 -48.9 Dark Down 32.0 86.2 Up 04:13:40 - 04:43:40 -2717
Blythe 04:28:41 -48.7 Dark Down 31.7 85.8 Up 04:13:41 - 04:43:41 -2760
Calipatria 04:28:44 -47.9 Dark Down 30.9 85.0 Up 04:13:44 - 04:43:44 -2782
Yuma 04:28:43 -48.7 Dark Down 31.6 85.2 Up 04:13:43 - 04:43:43 -2850

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 00YE2, (2025/12/12 04:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.67  85
Alhena         06:37:42.8 +16:23:57  1.9  3.85  75
18Nu Gem       06:28:57.8 +20:12:43  4.1  0.98  77
PPM 122657     06:33:16.3 +19:50:38  7.8  0.25  76
PPM 096144     06:33:05.2 +20:03:53 10.4  0.03  76
00YE2          06:33:07.6 +20:05:39 14.4        76
Positions are for J2000

Event circumstances last updated at 2019/03/23 00:15:08 UT

Marc W. Buie, Southwest Research Institute

RECON