RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star GA1160:01938563 with event index number of 1105624

Geocentric closest approach at 2022/02/10 03:44:42 UTC

J2000 position of star is 06:06:48.0 +27:27:51
Equinox of date position of star is 06:08:10.6 +27:27:37
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 23 degrees from the moon. Moon is 65% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 30.2 AU from the Sun and 29.6 AU from the Earth.
The TNO is moving 14.1 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 292 seconds.
The 1-sigma cross-track error in the shadow position is 1241 km.
The sky-plane scale is 21433.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 14.5 sec chord
Diameter=83.4 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2022/02/10 03:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:22.2 +07:24:34  0.4 20.25  26
Alnath         05:27:41.5 +28:37:27  1.6  9.01  15
PPM 095226     06:02:23.9 +27:34:18  6.0  1.29  22
PPM 095434     06:09:03.5 +27:51:20  8.4  0.44  23
PPM 095446     06:09:22.4 +27:25:23  8.6  0.27  23
PPM 095396     06:08:00.1 +27:37:48 11.9  0.17  23
15875          06:08:11.3 +27:27:37 15.6        24
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 3.1 sigma about the mid-time.
The median site spacing is 27.7 km RECON observability=1.0 and success probability=25.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 03:45:37 -25.3 Dark Up 64.0 147.4 Up 03:30:37 - 04:00:37 2851
Sleaford 03:44:26 -33.4 Dark Up 65.4 177.2 Up 03:29:26 - 03:59:26 2797
Kelowna 03:45:35 -26.0 Dark Up 65.0 148.2 Up 03:30:35 - 04:00:35 2757
Peachland 03:45:37 -25.8 Dark Up 65.0 147.5 Up 03:30:37 - 04:00:37 2751
Summerland 03:45:37 -25.9 Dark Up 65.1 147.5 Up 03:30:37 - 04:00:37 2735
Penticton 03:45:36 -25.9 Dark Up 65.2 147.6 Up 03:30:36 - 04:00:36 2726
Victoria 03:45:57 -23.6 Dark Up 64.6 139.2 Up 03:30:57 - 04:00:57 2698
Oliver 03:45:37 -26.0 Dark Up 65.5 147.2 Up 03:30:37 - 04:00:37 2692
Anarchist Mountain Observatory 03:45:37 -26.2 Dark Up 65.7 147.4 Up 03:30:37 - 04:00:37 2672
Tonasket 03:45:38 -26.2 Dark Up 66.0 146.9 Up 03:30:38 - 04:00:38 2642
Okanogan 03:45:39 -26.1 Dark Up 66.2 146.2 Up 03:30:39 - 04:00:39 2611
Brewster 03:45:41 -26.0 Dark Up 66.4 145.4 Up 03:30:41 - 04:00:41 2588
Manson/Chelan 03:45:43 -25.8 Dark Up 66.4 144.4 Up 03:30:43 - 04:00:43 2574
Wenatchee 03:45:45 -25.7 Dark Up 66.7 143.5 Up 03:30:45 - 04:00:45 2530
Ellensburg 03:45:47 -25.7 Dark Up 67.0 142.5 Up 03:30:47 - 04:00:47 2493
Yakima 03:45:48 -25.7 Dark Up 67.3 141.9 Up 03:30:48 - 04:00:48 2452
Toppenish/White Swan 03:45:48 -25.8 Dark Up 67.5 141.9 Up 03:30:48 - 04:00:48 2428
Pasco 03:45:42 -26.7 Dark Up 68.1 144.3 Up 03:30:42 - 04:00:42 2392
Goldendale 03:45:52 -25.6 Dark Up 67.8 140.2 Up 03:30:52 - 04:00:52 2380
The Dalles 03:45:54 -25.4 Dark Up 67.8 139.1 Up 03:30:54 - 04:00:54 2365
PNWRO 03:45:41 -26.9 Dark Up 68.4 144.4 Up 03:30:41 - 04:00:41 2363
Maupin 03:45:54 -25.5 Dark Up 68.1 138.7 Up 03:30:54 - 04:00:54 2320
Sisters 03:45:59 -25.2 Dark Up 68.6 136.2 Up 03:30:59 - 04:00:59 2241
Redmond 03:45:57 -25.5 Dark Up 68.8 137.0 Up 03:30:57 - 04:00:57 2231
Bend 03:45:58 -25.4 Dark Up 68.9 136.3 Up 03:30:58 - 04:00:58 2212
Oregon Observatory 03:46:00 -25.3 Dark Up 68.9 135.7 Up 03:31:00 - 04:01:00 2197
La Pine/Gilchrist 03:46:00 -25.3 Dark Up 69.0 135.2 Up 03:31:00 - 04:01:00 2178
North Lake 03:45:58 -25.8 Dark Up 69.6 135.7 Up 03:30:58 - 04:00:58 2121
Chiloquin 03:46:05 -25.1 Dark Up 69.6 132.4 Up 03:31:05 - 04:01:05 2071
Paisley 03:45:57 -26.1 Dark Up 70.2 135.3 Up 03:30:57 - 04:00:57 2057
Klamath Falls 03:46:05 -25.2 Dark Up 69.9 131.9 Up 03:31:05 - 04:01:05 2035
Lakeview 03:45:58 -26.3 Dark Up 70.7 134.8 Up 03:30:58 - 04:00:58 2001
Cedarville 03:45:58 -26.4 Dark Up 71.2 133.8 Up 03:30:58 - 04:00:58 1930
Fall River/Burney 03:46:06 -25.6 Dark Up 70.9 130.2 Up 03:31:06 - 04:01:06 1905
Susanville 03:46:04 -26.2 Dark Up 71.7 130.3 Up 03:31:04 - 04:01:04 1825
Greenville 03:46:05 -26.0 Dark Up 71.7 129.1 Up 03:31:05 - 04:01:05 1802
Gimple 03:46:05 -26.0 Dark Up 71.8 129.2 Up 03:31:05 - 04:01:05 1800
Quincy 03:46:06 -26.0 Dark Up 71.9 128.6 Up 03:31:06 - 04:01:06 1781
Portola 03:46:04 -26.3 Dark Up 72.2 129.3 Up 03:31:04 - 04:01:04 1758
Reno 03:46:01 -26.9 Dark Up 72.8 130.0 Up 03:31:01 - 04:01:01 1717
Carson City 03:46:01 -26.9 Dark Up 73.0 129.2 Up 03:31:01 - 04:01:01 1679
Gardnerville 03:46:02 -26.9 Dark Up 73.2 128.7 Up 03:31:02 - 04:01:02 1652
Yerington 03:45:58 -27.4 Dark Up 73.5 130.1 Up 03:30:58 - 04:00:58 1646
Hawthorne 03:45:56 -27.8 Dark Up 74.1 130.1 Up 03:30:56 - 04:00:56 1586
Dunrhomin 03:44:35 -37.6 Dark Up 77.2 178.0 Up 03:29:35 - 03:59:35 1559
Lee Vining 03:46:00 -27.5 Dark Up 74.2 127.5 Up 03:31:00 - 04:01:00 1537
Tonopah 03:45:49 -28.9 Dark Up 75.3 132.3 Up 03:30:49 - 04:00:49 1509
Bishop 03:45:57 -28.1 Dark Up 75.0 127.4 Up 03:30:57 - 04:00:57 1459
Beatty 03:45:48 -29.4 Dark Up 76.3 130.1 Up 03:30:48 - 04:00:48 1377
Indian Springs 03:45:42 -30.2 Dark Up 77.1 132.0 Up 03:30:42 - 04:00:42 1322
CPSLO 03:46:15 -26.4 Dark Up 74.6 116.2 Up 03:31:15 - 04:01:15 1289
Henderson 03:45:39 -30.8 Dark Up 77.9 132.3 Up 03:30:39 - 04:00:39 1252
Patrick 03:45:34 -31.8 Dark Up 79.0 133.7 Up 03:30:34 - 04:00:34 1165
Laughlin/Bullhead City 03:45:38 -31.2 Dark Up 78.7 130.4 Up 03:30:38 - 04:00:38 1151
Kingman/Dolan Springs 03:45:34 -31.6 Dark Up 79.0 132.2 Up 03:30:34 - 04:00:34 1144
Mohave Valley 03:45:39 -31.2 Dark Up 78.9 129.4 Up 03:30:39 - 04:00:39 1122
Wildwood 03:46:05 -28.1 Dark Up 76.6 116.0 Up 03:31:05 - 04:01:05 1116
Lake Havasu City 03:45:38 -31.5 Dark Up 79.3 128.6 Up 03:30:38 - 04:00:38 1074
Idyllwild 03:45:54 -29.6 Dark Up 78.1 118.7 Up 03:30:54 - 04:00:54 1038
Parker 03:45:38 -31.5 Dark Up 79.6 127.2 Up 03:30:38 - 04:00:38 1036
Blythe 03:45:41 -31.3 Dark Up 79.7 124.0 Up 03:30:41 - 04:00:41 985
Calipatria 03:45:48 -30.6 Dark Up 79.3 119.1 Up 03:30:48 - 04:00:48 949
George/Scottsdale 03:45:24 -33.5 Dark Up 81.3 134.3 Up 03:30:24 - 04:00:24 947
Yuma 03:45:43 -31.3 Dark Up 80.1 119.4 Up 03:30:43 - 04:00:43 886

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 15875, (2022/02/10 03:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 20.25  26
Alnath         05:26:17.5 +28:36:23  1.6  9.01  15
PPM 095226     06:01:00.4 +27:34:21  6.0  1.29  22
PPM 095434     06:07:39.9 +27:51:36  8.4  0.44  23
PPM 095446     06:07:59.1 +27:25:40  8.6  0.27  23
PPM 095396     06:06:36.7 +27:38:03 11.9  0.17  23
15875          06:06:48.0 +27:27:51 15.6        23
Positions are for J2000

Event circumstances last updated at 2021/12/05 02:03:47 UT

Marc W. Buie, Southwest Research Institute

RECON