RECON: TNO occultation with 143751

Event between (143751) 03US292 and star GA1100:00354116 with event index number of 1675114

Geocentric closest approach at 2021/01/04 03:09:58 UTC

J2000 position of star is 03:13:14.8 +21:13:00
Equinox of date position of star is 03:14:24.7 +21:17:28
Stellar brightness G=15.9, use SENSEUP=128
Star is 113 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=25.3

[RECON map]
TNO is 32.9 AU from the Sun and 32.2 AU from the Earth.
The TNO is moving 13.0 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 379 seconds.
The 1-sigma cross-track error in the shadow position is 2586 km.
The sky-plane scale is 23383.7 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=109.7 km assuming a 5% albedo -- 4.6 sec chord
Diameter=44.8 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is 5:3EE+5:3II
 
 
 
 
 
 

Star training set for 143751, (2021/01/04 03:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.7 +16:33:00  0.8 20.10  95
44Zet Per      03:55:27.5 +31:56:40  2.8 14.03 100
58Zet Ari      03:16:06.8 +21:07:16  4.9  0.42 112
PPM 092330     03:16:59.0 +21:14:30  8.3  0.59 112
PPM 092291     03:13:29.1 +21:33:39  9.9  0.35 113
143751         03:14:27.6 +21:17:39 15.9       112
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 2.4 sigma about the mid-time.
The median site spacing is 24.1 km RECON observability=1.0 and success probability=18.9%
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 03:10:09 -28.0 Dark Down 58.3 150.5 Up 02:55:09 - 03:25:09 1541
Victoria 03:10:36 -25.3 Dark Down 58.3 142.4 Up 02:55:36 - 03:25:36 1513
Kelowna 03:10:11 -27.9 Dark Down 58.6 149.9 Up 02:55:11 - 03:25:11 1512
Peachland 03:10:13 -27.7 Dark Down 58.6 149.3 Up 02:55:13 - 03:25:13 1511
Summerland 03:10:13 -27.7 Dark Down 58.8 149.4 Up 02:55:13 - 03:25:13 1496
Penticton 03:10:13 -27.8 Dark Down 58.9 149.5 Up 02:55:13 - 03:25:13 1487
Oliver 03:10:14 -27.8 Dark Down 59.2 149.2 Up 02:55:14 - 03:25:14 1457
Anarchist Mountain Observatory 03:10:14 -27.9 Dark Down 59.4 149.4 Up 02:55:14 - 03:25:14 1437
Tonasket 03:10:15 -27.8 Dark Down 59.6 149.0 Up 02:55:15 - 03:25:15 1413
Okanogan 03:10:18 -27.7 Dark Down 59.9 148.5 Up 02:55:18 - 03:25:18 1388
Brewster 03:10:20 -27.6 Dark Down 60.0 147.9 Up 02:55:20 - 03:25:20 1370
Manson/Chelan 03:10:22 -27.3 Dark Down 60.1 147.1 Up 02:55:22 - 03:25:22 1363
Entiat 03:10:23 -27.3 Dark Down 60.2 146.7 Up 02:55:23 - 03:25:23 1346
Wenatchee 03:10:25 -27.2 Dark Down 60.4 146.3 Up 02:55:25 - 03:25:25 1327
Ellensburg 03:10:28 -27.0 Dark Down 60.7 145.6 Up 02:55:28 - 03:25:28 1298
Yakima 03:10:30 -27.0 Dark Down 61.0 145.1 Up 02:55:30 - 03:25:30 1263
Toppenish/White Swan 03:10:29 -27.1 Dark Down 61.2 145.2 Up 02:55:29 - 03:25:29 1239
Goldendale 03:10:34 -26.7 Dark Down 61.5 143.9 Up 02:55:34 - 03:25:34 1203
The Dalles 03:10:36 -26.5 Dark Down 61.6 143.0 Up 02:55:36 - 03:25:36 1195
Pasco 03:10:23 -27.9 Dark Down 61.8 147.3 Up 02:55:23 - 03:25:23 1190
PNWRO 03:10:23 -28.0 Dark Down 62.1 147.5 Up 02:55:23 - 03:25:23 1162
Maupin 03:10:38 -26.5 Dark Down 61.9 142.8 Up 02:55:38 - 03:25:38 1155
Sisters 03:10:44 -26.1 Dark Down 62.4 140.9 Up 02:55:44 - 03:25:44 1092
Redmond 03:10:42 -26.3 Dark Down 62.6 141.6 Up 02:55:42 - 03:25:42 1077
Bend 03:10:43 -26.2 Dark Down 62.7 141.1 Up 02:55:43 - 03:25:43 1063
Oregon Observatory 03:10:45 -26.1 Dark Down 62.8 140.6 Up 02:55:45 - 03:25:45 1052
La Pine/Gilchrist 03:10:46 -26.0 Dark Down 62.9 140.3 Up 02:55:46 - 03:25:46 1035
North Lake 03:10:45 -26.4 Dark Down 63.5 140.8 Up 02:55:45 - 03:25:45 977
Paisley 03:10:45 -26.6 Dark Down 64.1 140.8 Up 02:55:45 - 03:25:45 916
Klamath Falls 03:10:54 -25.7 Dark Down 63.9 137.9 Up 02:55:54 - 03:25:54 913
Lakeview 03:10:46 -26.7 Dark Down 64.6 140.5 Up 02:55:46 - 03:25:46 863
Cedarville 03:10:48 -26.7 Dark Down 65.2 139.9 Up 02:55:48 - 03:25:48 798
Fall River/Burney 03:10:56 -25.8 Dark Down 65.0 137.0 Up 02:55:56 - 03:25:56 793
Susanville 03:10:55 -26.2 Dark Down 65.8 137.4 Up 02:55:55 - 03:25:55 711
Greenville 03:10:57 -26.0 Dark Down 65.9 136.5 Up 02:55:57 - 03:25:57 695
Gimple 03:10:57 -26.0 Dark Down 65.9 136.6 Up 02:55:57 - 03:25:57 692
Quincy 03:10:58 -26.0 Dark Down 66.0 136.2 Up 02:55:58 - 03:25:58 676
Portola 03:10:56 -26.3 Dark Down 66.4 136.9 Up 02:55:56 - 03:25:56 648
Reno 03:10:53 -26.7 Dark Down 66.9 137.7 Up 02:55:53 - 03:25:53 602
Carson City 03:10:54 -26.7 Dark Down 67.2 137.2 Up 02:55:54 - 03:25:54 568
Gardnerville 03:10:55 -26.7 Dark Down 67.4 136.9 Up 02:55:55 - 03:25:55 543
Yerington 03:10:52 -27.2 Dark Down 67.7 138.1 Up 02:55:52 - 03:25:52 528
Hawthorne 03:10:50 -27.5 Dark Down 68.3 138.4 Up 02:55:50 - 03:25:50 467
Lee Vining 03:10:55 -27.1 Dark Down 68.4 136.5 Up 02:55:55 - 03:25:55 430
Tonopah 03:10:43 -28.5 Dark Down 69.3 140.7 Up 02:55:43 - 03:25:43 375
Bishop 03:10:53 -27.5 Dark Down 69.3 136.9 Up 02:55:53 - 03:25:53 348
Beatty 03:10:45 -28.7 Dark Down 70.5 139.7 Up 02:55:45 - 03:25:45 249
CPSLO 03:11:07 -25.4 Dark Down 69.3 128.4 Up 02:56:07 - 03:26:07 248
Niwot 03:09:25 -37.7 Dark Down 71.0 173.8 Up 02:54:25 - 03:24:25 214
SwRI 03:09:25 -37.6 Dark Down 71.1 173.5 Up 02:54:25 - 03:24:25 206
Indian Springs 03:10:39 -29.5 Dark Down 71.2 141.6 Up 02:55:39 - 03:25:39 181
Henderson 03:10:37 -30.0 Dark Down 72.0 142.3 Up 02:55:37 - 03:25:37 106
Searchlight/Boulder City 03:10:39 -30.0 Dark Down 72.5 141.4 Up 02:55:39 - 03:25:39 48
Wildwood 03:11:06 -26.9 Dark Down 71.4 130.0 Up 02:56:06 - 03:26:06 39
Patrick 03:10:32 -30.8 Dark Down 73.0 144.0 Up 02:55:32 - 03:25:32 8
Laughlin/Bullhead City 03:10:37 -30.2 Dark Down 72.9 141.7 Up 02:55:37 - 03:25:37 7
Kingman/Dolan Springs 03:10:34 -30.6 Dark Down 73.1 143.1 Up 02:55:34 - 03:25:34 -8
Mohave Valley 03:10:38 -30.2 Dark Down 73.1 141.2 Up 02:55:38 - 03:25:38 -20
DCO 03:10:29 -31.3 Dark Down 73.6 145.4 Up 02:55:29 - 03:25:29 -45
Idyllwild 03:10:56 -28.3 Dark Down 72.8 133.3 Up 02:55:56 - 03:25:56 -62
Lake Havasu City 03:10:38 -30.3 Dark Down 73.6 141.0 Up 02:55:38 - 03:25:38 -68
Parker 03:10:39 -30.3 Dark Down 73.8 140.3 Up 02:55:39 - 03:25:39 -104
Blythe 03:10:42 -30.0 Dark Down 74.1 138.4 Up 02:55:42 - 03:25:42 -146
Calipatria 03:10:50 -29.2 Dark Down 73.9 134.8 Up 02:55:50 - 03:25:50 -163
George/Scottsdale 03:10:25 -32.2 Dark Down 75.4 146.5 Up 02:55:25 - 03:25:25 -226
Yuma 03:10:46 -29.8 Dark Down 74.8 136.0 Up 02:55:46 - 03:25:46 -237

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 143751, (2021/01/04 03:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.10  95
44Zet Per      03:54:07.9 +31:53:01  2.8 14.03 100
58Zet Ari      03:14:54.1 +21:02:39  4.9  0.42 112
PPM 092330     03:15:46.1 +21:09:54  8.3  0.59 112
PPM 092291     03:12:16.3 +21:28:58  9.9  0.35 113
143751         03:13:14.8 +21:13:00 15.9       113
Positions are for J2000

Event circumstances last updated at 2020/03/11 21:39:05 UT

Marc W. Buie, Southwest Research Institute

RECON