RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star UC4-590-022111 with event index number of 232708

Geocentric closest approach at 2020/01/02 02:57:33 UTC

J2000 position of star is 05:48:34.5 +27:51:02
Equinox of date position of star is 05:49:42.6 +27:51:19
Stellar brightness R=16.4, use SENSEUP=128
Star is 88 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=21.7

[RECON map]
TNO is 29.6 AU from the Sun and 28.6 AU from the Earth.
The TNO is moving 23.5 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 261 seconds.
The 1-sigma cross-track error in the shadow position is 1092 km.
The sky-plane scale is 20751.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 10.2 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2020/01/02 02:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.2 +16:32:53  0.8 20.24  70
Alnath         05:27:33.5 +28:37:21  1.6  4.97  84
PPM 095117     05:57:50.1 +28:56:37  6.5  2.07  90
PPM 094914     05:50:04.3 +27:22:08  7.9  0.49  88
PPM 094879     05:49:00.7 +27:38:30  8.8  0.28  88
15875          05:49:50.1 +27:51:21 16.4        89
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 3.4 sigma about the mid-time.
The median site spacing is 20.4 km RECON observability=1.0 and success probability=23.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 03:00:01 -26.6 Dark Up 39.8 91.7 Up 02:45:01 - 03:15:01 -826
Tonasket 03:00:02 -26.6 Dark Up 39.8 91.5 Up 02:45:02 - 03:15:02 -844
Okanogan 03:00:03 -26.4 Dark Up 39.7 91.1 Up 02:45:03 - 03:15:03 -867
Brewster 03:00:04 -26.3 Dark Up 39.6 90.8 Up 02:45:04 - 03:15:04 -882
Manson/Chelan 03:00:05 -26.0 Dark Up 39.3 90.3 Up 02:45:05 - 03:15:05 -887
Entiat 03:00:06 -25.9 Dark Up 39.3 90.1 Up 02:45:06 - 03:15:06 -902
Wenatchee 03:00:07 -25.8 Dark Up 39.2 89.8 Up 02:45:07 - 03:15:07 -919
Ellensburg 03:00:09 -25.7 Dark Up 39.1 89.3 Up 02:45:09 - 03:15:09 -946
Yakima 03:00:10 -25.6 Dark Up 39.0 89.0 Up 02:45:10 - 03:15:10 -978
Toppenish/White Swan 03:00:10 -25.7 Dark Up 39.2 88.9 Up 02:45:10 - 03:15:10 -1002
Goldendale 03:00:13 -25.3 Dark Up 38.9 88.2 Up 02:45:13 - 03:15:13 -1033
The Dalles 03:00:14 -25.0 Dark Up 38.6 87.7 Up 02:45:14 - 03:15:14 -1039
Pasco 03:00:09 -26.5 Dark Up 40.0 89.7 Up 02:45:09 - 03:15:09 -1054
George/Umatilla 03:00:10 -26.4 Dark Up 39.9 89.3 Up 02:45:10 - 03:15:10 -1075
Maupin 03:00:15 -25.1 Dark Up 38.7 87.5 Up 02:45:15 - 03:15:15 -1077
PNWRO 03:00:09 -26.7 Dark Up 40.2 89.7 Up 02:45:09 - 03:15:09 -1082
Madras/Culver 03:00:17 -25.0 Dark Up 38.6 87.0 Up 02:45:17 - 03:15:17 -1121
Sisters 03:00:19 -24.6 Dark Up 38.3 86.5 Up 02:45:19 - 03:15:19 -1133
Redmond 03:00:18 -24.9 Dark Up 38.6 86.7 Up 02:45:18 - 03:15:18 -1149
Bend 03:00:19 -24.8 Dark Up 38.4 86.5 Up 02:45:19 - 03:15:19 -1162
Oregon Observatory 03:00:20 -24.6 Dark Up 38.3 86.2 Up 02:45:20 - 03:15:20 -1172
La Pine/Gilchrist 03:00:20 -24.6 Dark Up 38.3 86.0 Up 02:45:20 - 03:15:20 -1187
North Lake 03:00:21 -24.9 Dark Up 38.7 86.1 Up 02:45:21 - 03:15:21 -1245
Chiloquin 03:00:24 -24.1 Dark Up 37.9 84.9 Up 02:45:24 - 03:15:24 -1268
Klamath Falls 03:00:25 -24.1 Dark Up 38.0 84.7 Up 02:45:25 - 03:15:25 -1300
Paisley 03:00:22 -25.1 Dark Up 38.9 85.9 Up 02:45:22 - 03:15:22 -1305
Tulelake 03:00:26 -24.3 Dark Up 38.2 84.7 Up 02:45:26 - 03:15:26 -1334
Lakeview 03:00:23 -25.2 Dark Up 39.0 85.6 Up 02:45:23 - 03:15:23 -1355
Fall River/Burney 03:00:28 -24.2 Dark Up 38.2 84.1 Up 02:45:28 - 03:15:28 -1415
Cedarville 03:00:25 -25.2 Dark Up 39.1 85.2 Up 02:45:25 - 03:15:25 -1418
Susanville 03:00:29 -24.7 Dark Up 38.7 84.0 Up 02:45:29 - 03:15:29 -1497
Greenville 03:00:30 -24.4 Dark Up 38.4 83.6 Up 02:45:30 - 03:15:30 -1510
Gimple 03:00:30 -24.5 Dark Up 38.5 83.7 Up 02:45:30 - 03:15:30 -1514
Quincy 03:00:31 -24.4 Dark Up 38.4 83.5 Up 02:45:31 - 03:15:31 -1528
Portola 03:00:30 -24.7 Dark Up 38.7 83.6 Up 02:45:30 - 03:15:30 -1557
Reno 03:00:30 -25.2 Dark Up 39.2 83.8 Up 02:45:30 - 03:15:30 -1605
Carson City 03:00:31 -25.1 Dark Up 39.2 83.5 Up 02:45:31 - 03:15:31 -1637
Gardnerville 03:00:31 -25.1 Dark Up 39.2 83.3 Up 02:45:31 - 03:15:31 -1661
Yerington 03:00:30 -25.6 Dark Up 39.6 83.7 Up 02:45:30 - 03:15:30 -1678
Hawthorne 03:00:31 -25.9 Dark Up 40.0 83.6 Up 02:45:31 - 03:15:31 -1740
Lee Vining 03:00:33 -25.4 Dark Up 39.6 82.9 Up 02:45:33 - 03:15:33 -1772
Tonopah 03:00:29 -26.9 Dark Up 41.1 84.0 Up 02:45:29 - 03:15:29 -1835
Bishop 03:00:33 -25.9 Dark Up 40.1 82.8 Up 02:45:33 - 03:15:33 -1854
Lone Pine 03:00:35 -26.0 Dark Up 40.2 82.3 Up 02:45:35 - 03:15:35 -1936
CPSLO 03:00:43 -23.7 Dark Up 38.0 80.0 Up 02:45:43 - 03:15:43 -1954
Beatty 03:00:31 -27.1 Dark Up 41.3 83.2 Up 02:45:31 - 03:15:31 -1958
Indian Springs 03:00:30 -27.9 Dark Up 42.1 83.5 Up 02:45:30 - 03:15:30 -2029
Niwot 02:59:58 -36.3 Dark Up 50.4 93.4 Up 02:44:58 - 03:14:58 -2061
Henderson 03:00:30 -28.4 Dark Up 42.6 83.4 Up 02:45:30 - 03:15:30 -2105
Wildwood 03:00:42 -25.1 Dark Up 39.4 80.0 Up 02:45:42 - 03:15:42 -2147
Searchlight/Boulder City 03:00:31 -28.3 Dark Up 42.6 82.9 Up 02:45:31 - 03:15:31 -2161
Laughlin/Bullhead City 03:00:31 -28.6 Dark Up 42.8 82.8 Up 02:45:31 - 03:15:31 -2202
Patrick 03:00:29 -29.2 Dark Up 43.4 83.3 Up 02:45:29 - 03:15:29 -2205
Kingman/Dolan Springs 03:00:30 -29.0 Dark Up 43.3 83.0 Up 02:45:30 - 03:15:30 -2219
Mohave Valley 03:00:32 -28.5 Dark Up 42.8 82.5 Up 02:45:32 - 03:15:32 -2228
Idyllwild 03:00:39 -26.6 Dark Up 40.9 80.5 Up 02:45:39 - 03:15:39 -2255
DCO 03:00:28 -29.7 Dark Up 44.0 83.4 Up 02:45:28 - 03:15:28 -2261
Lake Havasu City 03:00:32 -28.7 Dark Up 43.0 82.3 Up 02:45:32 - 03:15:32 -2275
Parker 03:00:33 -28.6 Dark Up 42.9 82.0 Up 02:45:33 - 03:15:33 -2309
Blythe 03:00:35 -28.3 Dark Up 42.6 81.3 Up 02:45:35 - 03:15:35 -2348
Calipatria 03:00:38 -27.4 Dark Up 41.8 80.5 Up 02:45:38 - 03:15:38 -2359
Yuma 03:00:37 -28.1 Dark Up 42.5 80.5 Up 02:45:37 - 03:15:37 -2435

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, (2020/01/02 02:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.24  70
Alnath         05:26:17.5 +28:36:24  1.6  4.97  84
PPM 095117     05:56:33.8 +28:56:32  6.5  2.07  90
PPM 094914     05:48:49.0 +27:21:49  7.9  0.49  88
PPM 094879     05:47:45.2 +27:38:10  8.8  0.28  88
15875          05:48:34.5 +27:51:02 16.4        88
Positions are for J2000

Event circumstances last updated at 2018/01/01 18:31:35 UT

Marc W. Buie, Southwest Research Institute

RECON