RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star UC4-589-021131 with event index number of 244208

Geocentric closest approach at 2020/02/01 06:54:05 UTC

J2000 position of star is 05:45:24.3 +27:46:57
Equinox of date position of star is 05:46:32.9 +27:47:20
Stellar brightness R=15.0, use SENSEUP=128
Star is 54 degrees from the moon. Moon is 43% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 29.6 AU from the Sun and 28.9 AU from the Earth.
The TNO is moving 15.8 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 376 seconds.
The 1-sigma cross-track error in the shadow position is 1066 km.
The sky-plane scale is 20950.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 15.2 sec chord
Diameter=97.9 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2020/02/01 06:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.5 +16:32:53  0.8 19.61  36
Alnath         05:27:33.8 +28:37:21  1.6  4.29  50
PPM 094619     05:40:35.0 +29:13:30  5.9  1.96  53
PPM 094771     05:45:37.0 +27:44:20  8.4  0.24  54
PPM 094826     05:47:13.7 +27:57:32  9.9  0.21  54
PPM 094812     05:46:57.3 +27:51:43 10.2  0.10  54
15875          05:46:40.2 +27:47:22 15.0        55
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 25.5 km RECON observability=1.0 and success probability=11.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:51:39 -54.4 Dark Up 59.8 235.9 Up 06:36:39 - 07:06:39 -1767
Tonasket 06:51:38 -54.6 Dark Up 59.9 236.2 Up 06:36:38 - 07:06:38 -1791
Okanogan 06:51:39 -54.8 Dark Up 60.2 236.5 Up 06:36:39 - 07:06:39 -1827
Brewster 06:51:39 -55.0 Dark Up 60.5 236.6 Up 06:36:39 - 07:06:39 -1857
Manson/Chelan 06:51:40 -55.0 Dark Up 60.8 236.4 Up 06:36:40 - 07:06:40 -1881
Entiat 06:51:40 -55.2 Dark Up 60.9 236.6 Up 06:36:40 - 07:06:40 -1904
Wenatchee 06:51:40 -55.3 Dark Up 61.1 236.9 Up 06:36:40 - 07:06:40 -1931
Ellensburg 06:51:40 -55.6 Dark Up 61.5 237.2 Up 06:36:40 - 07:06:40 -1976
Yakima 06:51:40 -55.9 Dark Up 61.7 237.8 Up 06:36:40 - 07:06:40 -2019
Toppenish/White Swan 06:51:39 -56.1 Dark Up 61.7 238.4 Up 06:36:39 - 07:06:39 -2041
Pasco 06:51:33 -56.7 Dark Up 61.0 240.3 Up 06:36:33 - 07:06:33 -2046
PNWRO 06:51:32 -57.0 Dark Up 61.0 241.0 Up 06:36:32 - 07:06:32 -2071
George/Umatilla 06:51:34 -56.9 Dark Up 61.3 240.5 Up 06:36:34 - 07:06:34 -2083
Goldendale 06:51:40 -56.4 Dark Up 62.3 238.7 Up 06:36:40 - 07:06:40 -2102
The Dalles 06:51:42 -56.4 Dark Up 62.6 238.5 Up 06:36:42 - 07:06:42 -2128
Maupin 06:51:40 -56.8 Dark Up 62.7 239.4 Up 06:36:40 - 07:06:40 -2172
Madras/Culver 06:51:40 -57.2 Dark Up 63.1 240.2 Up 06:36:40 - 07:06:40 -2230
Sisters 06:51:42 -57.2 Dark Up 63.5 240.2 Up 06:36:42 - 07:06:42 -2268
Redmond 06:51:40 -57.4 Dark Up 63.3 240.8 Up 06:36:40 - 07:06:40 -2269
Bend 06:51:40 -57.5 Dark Up 63.5 241.0 Up 06:36:40 - 07:06:40 -2292
Oregon Observatory 06:51:41 -57.6 Dark Up 63.6 241.1 Up 06:36:41 - 07:06:41 -2311
La Pine/Gilchrist 06:51:41 -57.7 Dark Up 63.8 241.4 Up 06:36:41 - 07:06:41 -2334
North Lake 06:51:37 -58.3 Dark Up 63.6 242.9 Up 06:36:37 - 07:06:37 -2377
Paisley 06:51:36 -58.9 Dark Up 63.6 244.4 Up 06:36:36 - 07:06:36 -2434
Chiloquin 06:51:42 -58.3 Dark Up 64.5 242.9 Up 06:36:42 - 07:06:42 -2455
Lakeview 06:51:34 -59.4 Dark Up 63.7 245.6 Up 06:36:34 - 07:06:34 -2488
Klamath Falls 06:51:41 -58.6 Dark Up 64.6 243.6 Up 06:36:41 - 07:06:41 -2492
Tulelake 06:51:39 -59.0 Dark Up 64.5 244.6 Up 06:36:39 - 07:06:39 -2519
Niwot 06:50:23 -66.6 Dark Up 53.4 263.6 Up 06:35:23 - 07:05:23 -2541
Cedarville 06:51:33 -59.9 Dark Up 63.8 247.0 Up 06:36:33 - 07:06:33 -2558
Fall River/Burney 06:51:38 -59.7 Dark Up 64.9 246.4 Up 06:36:38 - 07:06:38 -2617
Susanville 06:51:33 -60.5 Dark Up 64.6 248.6 Up 06:36:33 - 07:06:33 -2681
Gimple 06:51:34 -60.6 Dark Up 64.8 248.8 Up 06:36:34 - 07:06:34 -2713
Greenville 06:51:35 -60.5 Dark Up 64.9 248.7 Up 06:36:35 - 07:06:35 -2713
Quincy 06:51:34 -60.7 Dark Up 65.0 249.1 Up 06:36:34 - 07:06:34 -2735
Portola 06:51:32 -61.0 Dark Up 64.7 250.0 Up 06:36:32 - 07:06:32 -2746
Reno 06:51:29 -61.6 Dark Up 64.3 251.2 Up 06:36:29 - 07:06:29 -2770
Carson City 06:51:28 -61.8 Dark Up 64.4 252.0 Up 06:36:28 - 07:06:28 -2809
Yerington 06:51:25 -62.3 Dark Up 64.0 253.0 Up 06:36:25 - 07:06:25 -2826
Gardnerville 06:51:28 -62.0 Dark Up 64.4 252.5 Up 06:36:28 - 07:06:28 -2836
Hawthorne 06:51:22 -62.9 Dark Up 63.7 254.5 Up 06:36:22 - 07:06:22 -2873
Tonopah 06:51:15 -64.0 Dark Up 62.8 256.8 Up 06:36:15 - 07:06:15 -2912
Lee Vining 06:51:23 -63.1 Dark Up 64.2 255.1 Up 06:36:23 - 07:06:23 -2938
Bishop 06:51:20 -63.9 Dark Up 63.8 257.0 Up 06:36:20 - 07:06:20 -2998
Beatty 06:51:11 -65.1 Dark Up 62.7 259.4 Up 06:36:11 - 07:06:11 -3035
Indian Springs 06:51:05 -65.9 Dark Up 61.9 260.9 Up 06:36:05 - 07:06:05 -3060
Lone Pine 06:51:17 -64.6 Dark Up 63.8 258.8 Up 06:36:17 - 07:06:17 -3078
Henderson 06:51:01 -66.7 Dark Up 61.4 262.5 Up 06:36:01 - 07:06:01 -3111
Patrick 06:50:55 -67.7 Dark Up 60.6 264.4 Up 06:35:55 - 07:05:55 -3168
Searchlight/Boulder City 06:51:01 -67.1 Dark Up 61.5 263.6 Up 06:36:01 - 07:06:01 -3174
DCO 06:50:52 -68.3 Dark Up 60.1 265.4 Up 06:35:52 - 07:05:52 -3193
Kingman/Dolan Springs 06:50:56 -67.8 Dark Up 60.8 264.7 Up 06:35:56 - 07:05:56 -3194
Laughlin/Bullhead City 06:50:58 -67.5 Dark Up 61.2 264.3 Up 06:35:58 - 07:05:58 -3202
Mohave Valley 06:50:58 -67.7 Dark Up 61.3 264.8 Up 06:35:58 - 07:05:58 -3232
CPSLO 06:51:30 -63.9 Dark Up 66.0 259.2 Up 06:36:30 - 07:06:30 -3240
Lake Havasu City 06:50:57 -68.2 Dark Up 61.1 265.7 Up 06:35:57 - 07:05:57 -3273
Parker 06:50:56 -68.5 Dark Up 61.1 266.4 Up 06:35:56 - 07:05:56 -3312
Wildwood 06:51:17 -66.0 Dark Up 64.6 263.5 Up 06:36:17 - 07:06:17 -3358
Blythe 06:50:57 -68.7 Dark Up 61.4 267.2 Up 06:35:57 - 07:05:57 -3372
Idyllwild 06:51:08 -67.4 Dark Up 63.1 265.6 Up 06:36:08 - 07:06:08 -3381
Calipatria 06:51:01 -68.5 Dark Up 62.2 267.5 Up 06:36:01 - 07:06:01 -3436
Yuma 06:50:56 -69.3 Dark Up 61.4 268.8 Up 06:35:56 - 07:05:56 -3474

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, (2020/02/01 06:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.61  36
Alnath         05:26:17.5 +28:36:23  1.6  4.29  50
PPM 094619     05:39:18.3 +29:12:55  5.9  1.96  53
PPM 094771     05:44:21.1 +27:43:53  8.4  0.24  54
PPM 094826     05:45:57.7 +27:57:09  9.9  0.21  54
PPM 094812     05:45:41.4 +27:51:19 10.2  0.10  54
15875          05:45:24.3 +27:46:57 15.0        54
Positions are for J2000

Event circumstances last updated at 2018/02/28 17:50:48 UT

Marc W. Buie, Southwest Research Institute

RECON