RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star UC4-589-021154 with event index number of 244207

Geocentric closest approach at 2020/01/31 09:17:26 UTC

J2000 position of star is 05:45:28.7 +27:47:06
Equinox of date position of star is 05:46:37.3 +27:47:29
Stellar brightness R=16.5, use SENSEUP=128
Star is 65 degrees from the moon. Moon is 34% 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 16.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 364 seconds.
The 1-sigma cross-track error in the shadow position is 1415 km.
The sky-plane scale is 20942.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 14.9 sec chord
Diameter=97.9 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2020/01/31 09:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.5 +16:32:53  0.8 19.62  47
Alnath         05:27:33.8 +28:37:21  1.6  4.31  61
PPM 094619     05:40:35.0 +29:13:30  5.9  1.97  64
PPM 094771     05:45:36.9 +27:44:20  8.4  0.26  65
PPM 094826     05:47:13.7 +27:57:32  9.9  0.20  65
PPM 094812     05:46:57.3 +27:51:43 10.2  0.08  65
15875          05:46:44.6 +27:47:31 16.5        65
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 2.5 sigma about the mid-time.
The median site spacing is 22.0 km RECON observability=1.0 and success probability=14.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:13:07 -56.1 Dark Down 38.3 269.9 Up 08:58:07 - 09:28:07 3109
Tonasket 09:13:06 -56.3 Dark Down 38.3 270.1 Up 08:58:06 - 09:28:06 3088
Okanogan 09:13:05 -56.7 Dark Down 38.4 270.2 Up 08:58:05 - 09:28:05 3052
Brewster 09:13:05 -57.0 Dark Down 38.5 270.3 Up 08:58:05 - 09:28:05 3022
Manson/Chelan 09:13:05 -57.3 Dark Down 38.8 270.2 Up 08:58:05 - 09:28:05 2993
Entiat 09:13:04 -57.5 Dark Down 38.8 270.3 Up 08:58:04 - 09:28:04 2971
Wenatchee 09:13:04 -57.8 Dark Down 38.9 270.4 Up 08:58:04 - 09:28:04 2944
Ellensburg 09:13:03 -58.2 Dark Down 39.0 270.6 Up 08:58:03 - 09:28:03 2899
Pasco 09:12:56 -58.4 Dark Down 38.0 272.2 Up 08:57:56 - 09:27:56 2865
Yakima 09:13:01 -58.6 Dark Down 39.0 270.9 Up 08:58:01 - 09:28:01 2860
PNWRO 09:12:55 -58.5 Dark Down 37.9 272.6 Up 08:57:55 - 09:27:55 2847
Toppenish/White Swan 09:13:00 -58.7 Dark Down 38.9 271.2 Up 08:58:00 - 09:28:00 2844
George/Umatilla 09:12:56 -58.8 Dark Down 38.2 272.3 Up 08:57:56 - 09:27:56 2827
Goldendale 09:12:59 -59.3 Dark Down 39.2 271.4 Up 08:57:59 - 09:27:59 2780
The Dalles 09:12:59 -59.6 Dark Down 39.5 271.3 Up 08:57:59 - 09:27:59 2749
Niwot 09:12:06 -55.9 Dark Down 27.2 284.6 Low 08:57:06 - 09:27:06 2714
Maupin 09:12:58 -60.0 Dark Down 39.4 271.7 Up 08:57:58 - 09:27:58 2711
Madras/Culver 09:12:56 -60.5 Dark Down 39.4 272.1 Up 08:57:56 - 09:27:56 2657
Redmond 09:12:55 -60.8 Dark Down 39.4 272.4 Up 08:57:55 - 09:27:55 2621
Sisters 09:12:56 -60.9 Dark Down 39.7 272.1 Up 08:57:56 - 09:27:56 2612
Bend 09:12:55 -61.1 Dark Down 39.5 272.5 Up 08:57:55 - 09:27:55 2596
Oregon Observatory 09:12:55 -61.3 Dark Down 39.6 272.5 Up 08:57:55 - 09:27:55 2576
La Pine/Gilchrist 09:12:54 -61.5 Dark Down 39.6 272.6 Up 08:57:54 - 09:27:54 2554
North Lake 09:12:51 -61.6 Dark Down 39.2 273.4 Up 08:57:51 - 09:27:51 2527
Paisley 09:12:48 -62.0 Dark Down 38.9 274.1 Up 08:57:48 - 09:27:48 2483
Lakeview 09:12:46 -62.4 Dark Down 38.7 274.6 Up 08:57:46 - 09:27:46 2438
Chiloquin 09:12:51 -62.6 Dark Down 39.8 273.3 Up 08:57:51 - 09:27:51 2435
Klamath Falls 09:12:50 -62.9 Dark Down 39.8 273.7 Up 08:57:50 - 09:27:50 2403
Tulelake 09:12:48 -63.0 Dark Down 39.5 274.1 Up 08:57:48 - 09:27:48 2385
Cedarville 09:12:44 -62.9 Dark Down 38.5 275.2 Up 08:57:44 - 09:27:44 2378
Fall River/Burney 09:12:46 -63.7 Dark Down 39.4 274.9 Up 08:57:46 - 09:27:46 2297
Susanville 09:12:41 -64.0 Dark Down 38.8 275.8 Up 08:57:41 - 09:27:41 2254
Gimple 09:12:41 -64.3 Dark Down 38.9 275.9 Up 08:57:41 - 09:27:41 2221
Greenville 09:12:42 -64.4 Dark Down 39.0 275.8 Up 08:57:42 - 09:27:42 2218
Portola 09:12:39 -64.4 Dark Down 38.6 276.4 Up 08:57:39 - 09:27:39 2199
Quincy 09:12:41 -64.5 Dark Down 39.0 276.0 Up 08:57:41 - 09:27:41 2198
Reno 09:12:37 -64.4 Dark Down 38.1 277.0 Up 08:57:37 - 09:27:37 2191
Carson City 09:12:36 -64.7 Dark Down 38.0 277.2 Up 08:57:36 - 09:27:36 2156
Yerington 09:12:33 -64.5 Dark Down 37.5 277.7 Up 08:57:33 - 09:27:33 2155
Gardnerville 09:12:35 -64.8 Dark Down 38.0 277.5 Up 08:57:35 - 09:27:35 2133
Hawthorne 09:12:30 -64.7 Dark Down 37.0 278.4 Up 08:57:30 - 09:27:30 2124
Tonopah 09:12:25 -64.3 Dark Down 35.9 279.5 Up 08:57:25 - 09:27:25 2120
Lee Vining 09:12:30 -65.3 Dark Down 37.3 278.5 Up 08:57:30 - 09:27:30 2053
Indian Springs 09:12:17 -64.6 Dark Down 34.5 281.2 Up 08:57:17 - 09:27:17 2020
Beatty 09:12:20 -64.9 Dark Down 35.4 280.5 Up 08:57:20 - 09:27:20 2019
Bishop 09:12:26 -65.5 Dark Down 36.7 279.3 Up 08:57:26 - 09:27:26 2015
Henderson 09:12:13 -64.5 Dark Down 33.8 281.9 Up 08:57:13 - 09:27:13 1989
Patrick 09:12:09 -64.2 Dark Down 32.8 282.8 Up 08:57:09 - 09:27:09 1964
DCO 09:12:06 -64.0 Dark Down 32.2 283.4 Up 08:57:06 - 09:27:06 1957
Lone Pine 09:12:23 -65.9 Dark Down 36.3 280.1 Up 08:57:23 - 09:27:23 1948
Kingman/Dolan Springs 09:12:09 -64.5 Dark Down 32.9 282.9 Up 08:57:09 - 09:27:09 1935
Searchlight/Boulder City 09:12:12 -64.9 Dark Down 33.6 282.3 Up 08:57:12 - 09:27:12 1934
Laughlin/Bullhead City 09:12:10 -64.8 Dark Down 33.3 282.7 Up 08:57:10 - 09:27:10 1916
Mohave Valley 09:12:09 -65.0 Dark Down 33.2 282.8 Up 08:57:09 - 09:27:09 1889
Lake Havasu City 09:12:08 -65.1 Dark Down 33.0 283.2 Up 08:57:08 - 09:27:08 1857
Parker 09:12:07 -65.3 Dark Down 32.9 283.4 Up 08:57:07 - 09:27:07 1823
Blythe 09:12:06 -65.8 Dark Down 33.0 283.6 Up 08:57:06 - 09:27:06 1760
CPSLO 09:12:28 -68.2 Dark Down 38.2 279.8 Up 08:57:28 - 09:27:28 1738
Idyllwild 09:12:12 -67.1 Dark Down 34.7 282.7 Up 08:57:12 - 09:27:12 1701
Calipatria 09:12:07 -66.7 Dark Down 33.6 283.6 Up 08:57:07 - 09:27:07 1679
Wildwood 09:12:18 -68.0 Dark Down 36.3 281.6 Up 08:57:18 - 09:27:18 1678
Yuma 09:12:04 -66.4 Dark Down 32.8 284.2 Up 08:57:04 - 09:27:04 1665

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, (2020/01/31 09:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.62  47
Alnath         05:26:17.5 +28:36:23  1.6  4.31  61
PPM 094619     05:39:18.3 +29:12:55  5.9  1.97  64
PPM 094771     05:44:21.1 +27:43:53  8.4  0.26  65
PPM 094826     05:45:57.7 +27:57:09  9.9  0.20  65
PPM 094812     05:45:41.4 +27:51:19 10.2  0.08  65
15875          05:45:28.7 +27:47:06 16.5        65
Positions are for J2000

Event circumstances last updated at 2018/02/28 17:50:27 UT

Marc W. Buie, Southwest Research Institute

RECON