RECON: TNO occultation with 131696

Event between (131696) 01XT254 and star GA1000:03419320 with event index number of 1382868

Geocentric closest approach at 2024/12/13 09:28:00 UTC

J2000 position of star is 10:13:55.5 +11:13:52
Equinox of date position of star is 10:14:57.5 +11:08:03
Stellar brightness G=15.6, use SENSEUP=128
Star is 96 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 36.3 AU from the Sun and 35.9 AU from the Earth.
The TNO is moving 5.0 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 1089 seconds.
The 1-sigma cross-track error in the shadow position is 3890 km.
The sky-plane scale is 26063.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 40.3 sec chord
Diameter=81.5 km assuming a 30% albedo -- 16.4 sec chord
Dynamical classification is 7:3EEEE
 
 
 
 
 
 

Star training set for 131696, (2024/12/13 09:28UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:42.0 +11:50:39  1.3  1.55  95
31 Leo         10:09:13.6 +09:52:28  6.0  1.93  95
PPM 127247     10:16:29.4 +11:32:57  7.9  0.54  96
PPM 127224     10:15:09.9 +10:43:03  8.7  0.39  96
PPM 127220     10:14:51.3 +11:03:30 11.3  0.11  96
131696         10:15:15.1 +11:06:23 15.6        96
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 0.8 sigma about the mid-time.
The median site spacing is 24.4 km RECON observability=1.0 and success probability=12.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:42:18 -55.7 Dark Up 36.7 120.6 Up 09:27:18 - 09:57:18 1331
Summerland 09:42:23 -56.0 Dark Up 36.7 120.1 Up 09:27:23 - 09:57:23 1299
Penticton 09:42:20 -56.0 Dark Up 36.8 120.2 Up 09:27:20 - 09:57:20 1294
Okanagan Falls 09:42:21 -56.1 Dark Up 36.9 120.0 Up 09:27:21 - 09:57:21 1275
Oliver 09:42:22 -56.2 Dark Up 37.0 119.9 Up 09:27:22 - 09:57:22 1259
Anarchist Mountain Observatory 09:42:22 -56.2 Dark Up 37.2 120.0 Up 09:27:22 - 09:57:22 1244
Oroville 09:42:22 -56.3 Dark Up 37.2 119.9 Up 09:27:22 - 09:57:22 1236
Tonasket 09:42:25 -56.5 Dark Up 37.3 119.8 Up 09:27:25 - 09:57:25 1212
Okanogan 09:42:27 -56.8 Dark Up 37.4 119.4 Up 09:27:27 - 09:57:27 1178
Brewster 09:42:30 -57.0 Dark Up 37.4 119.0 Up 09:27:30 - 09:57:30 1149
Manson/Chelan 09:42:35 -57.3 Dark Up 37.3 118.5 Up 09:27:35 - 09:57:35 1124
Entiat 09:42:36 -57.5 Dark Up 37.4 118.3 Up 09:27:36 - 09:57:36 1102
Wenatchee 09:42:39 -57.7 Dark Up 37.4 118.1 Up 09:27:39 - 09:57:39 1075
Ellensburg 09:42:43 -58.1 Dark Up 37.5 117.6 Up 09:27:43 - 09:57:43 1031
Yakima 09:42:45 -58.3 Dark Up 37.7 117.3 Up 09:27:45 - 09:57:45 990
Pasco 09:42:32 -57.8 Dark Up 38.7 118.4 Up 09:27:32 - 09:57:32 970
Toppenish/White Swan 09:42:45 -58.4 Dark Up 37.9 117.3 Up 09:27:45 - 09:57:45 970
PNWRO 09:42:29 -57.8 Dark Up 39.0 118.5 Up 09:27:29 - 09:57:29 948
George/Umatilla 09:42:34 -58.1 Dark Up 38.7 118.0 Up 09:27:34 - 09:57:34 934
Goldendale 09:42:52 -58.9 Dark Up 37.9 116.6 Up 09:27:52 - 09:57:52 910
The Dalles 09:42:57 -59.3 Dark Up 37.8 116.1 Up 09:27:57 - 09:57:57 883
Maupin 09:42:55 -59.5 Dark Up 38.0 115.9 Up 09:27:55 - 09:57:55 842
Madras/Culver 09:42:58 -59.8 Dark Up 38.3 115.5 Up 09:27:58 - 09:57:58 785
Redmond 09:43:01 -60.1 Dark Up 38.4 115.2 Up 09:28:01 - 09:58:01 748
Sisters 09:43:06 -60.3 Dark Up 38.1 114.8 Up 09:28:06 - 09:58:06 747
Bend 09:43:02 -60.3 Dark Up 38.4 114.9 Up 09:28:02 - 09:58:02 725
Oregon Observatory 09:43:05 -60.4 Dark Up 38.4 114.6 Up 09:28:05 - 09:58:05 705
La Pine/Gilchrist 09:43:06 -60.6 Dark Up 38.4 114.4 Up 09:28:06 - 09:58:06 684
North Lake 09:43:02 -60.5 Dark Up 39.0 114.7 Up 09:28:02 - 09:58:02 645
Paisley 09:43:00 -60.6 Dark Up 39.5 114.6 Up 09:28:00 - 09:58:00 591
Chiloquin 09:43:15 -61.4 Dark Up 38.7 113.3 Up 09:28:15 - 09:58:15 565
Niwot 09:39:54 -51.5 Dark Up 50.2 127.7 Up 09:24:54 - 09:54:54 543
Lakeview 09:42:58 -60.7 Dark Up 39.8 114.4 Up 09:27:58 - 09:57:58 540
Klamath Falls 09:43:15 -61.6 Dark Up 38.9 113.2 Up 09:28:15 - 09:58:15 530
SwRI 09:39:54 -51.6 Dark Up 50.2 127.5 Up 09:24:54 - 09:54:54 530
Tulelake 09:43:13 -61.5 Dark Up 39.2 113.2 Up 09:28:13 - 09:58:13 505
Cedarville 09:43:00 -61.0 Dark Up 40.2 114.1 Up 09:28:00 - 09:58:00 474
Fall River/Burney 09:43:15 -62.0 Dark Up 39.6 112.6 Up 09:28:15 - 09:58:15 411
Susanville 09:43:08 -61.8 Dark Up 40.3 112.8 Up 09:28:08 - 09:58:08 352
Gimple 09:43:11 -62.1 Dark Up 40.3 112.4 Up 09:28:11 - 09:58:11 321
Greenville 09:43:12 -62.1 Dark Up 40.2 112.3 Up 09:28:12 - 09:58:12 320
Quincy 09:43:13 -62.2 Dark Up 40.3 112.2 Up 09:28:13 - 09:58:13 299
Portola 09:43:08 -62.0 Dark Up 40.7 112.5 Up 09:28:08 - 09:58:08 291
Reno 09:43:01 -61.7 Dark Up 41.2 112.8 Up 09:28:01 - 09:58:01 269
Carson City 09:43:02 -61.8 Dark Up 41.4 112.5 Up 09:28:02 - 09:58:02 232
Yerington 09:42:55 -61.5 Dark Up 41.9 112.9 Up 09:27:55 - 09:57:55 218
Gardnerville 09:43:01 -61.9 Dark Up 41.5 112.4 Up 09:28:01 - 09:58:01 206
Hawthorne 09:42:49 -61.3 Dark Up 42.4 113.0 Up 09:27:49 - 09:57:49 175
Tonopah 09:42:33 -60.5 Dark Up 43.6 113.8 Up 09:27:33 - 09:57:33 143
Lee Vining 09:42:56 -61.9 Dark Up 42.3 112.1 Up 09:27:56 - 09:57:56 110
Bishop 09:42:48 -61.6 Dark Up 43.1 112.2 Up 09:27:48 - 09:57:48 55
Beatty 09:42:29 -60.6 Dark Up 44.4 113.2 Up 09:27:29 - 09:57:29 26
Indian Springs 09:42:15 -59.9 Dark Up 45.3 113.8 Up 09:27:15 - 09:57:15 6
Lone Pine 09:42:45 -61.6 Dark Up 43.6 111.8 Up 09:27:45 - 09:57:45 -22
Henderson 09:42:07 -59.6 Dark Up 46.0 114.0 Up 09:27:07 - 09:57:07 -41
Patrick 09:41:53 -58.9 Dark Up 47.0 114.3 Up 09:26:53 - 09:56:53 -92
Searchlight/Boulder City 09:42:07 -59.7 Dark Up 46.2 113.5 Up 09:27:07 - 09:57:07 -101
DCO 09:41:44 -58.4 Dark Up 47.6 114.7 Up 09:26:44 - 09:56:44 -114
Kingman/Dolan Springs 09:41:55 -59.1 Dark Up 47.0 114.0 Up 09:26:55 - 09:56:55 -118
Laughlin/Bullhead City 09:42:02 -59.5 Dark Up 46.6 113.5 Up 09:27:02 - 09:57:02 -128
Mohave Valley 09:42:02 -59.6 Dark Up 46.7 113.2 Up 09:27:02 - 09:57:02 -157
CPSLO 09:43:19 -64.0 Dark Up 42.2 108.6 Up 09:28:19 - 09:58:19 -192
Lake Havasu City 09:41:59 -59.5 Dark Up 47.1 113.0 Up 09:26:59 - 09:56:59 -196
Parker 09:41:58 -59.5 Dark Up 47.2 112.7 Up 09:26:58 - 09:56:58 -233
Blythe 09:42:03 -59.9 Dark Up 47.2 111.9 Up 09:27:03 - 09:57:03 -294
Wildwood 09:42:55 -62.8 Dark Up 44.1 109.1 Up 09:27:55 - 09:57:55 -298
Idyllwild 09:42:31 -61.5 Dark Up 45.6 110.3 Up 09:27:31 - 09:57:31 -312
Calipatria 09:42:16 -60.7 Dark Up 46.7 110.7 Up 09:27:16 - 09:57:16 -361
Yuma 09:42:03 -60.1 Dark Up 47.5 111.0 Up 09:27:03 - 09:57:03 -394

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 131696, (2024/12/13 09:28UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  1.55  95
31 Leo         10:07:54.2 +09:59:50  6.0  1.93  95
PPM 127247     10:15:09.6 +11:40:27  7.9  0.54  96
PPM 127224     10:13:50.4 +10:50:31  8.7  0.39  96
PPM 127220     10:13:31.6 +11:10:58 11.3  0.11  96
131696         10:13:55.5 +11:13:52 15.6        96
Positions are for J2000

Event circumstances last updated at 2019/06/08 09:40:18 UT

Marc W. Buie, Southwest Research Institute

RECON