RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star UC4-591-018990 with event index number of 94685

Geocentric closest approach at 2017/12/11 08:00:58 UTC

J2000 position of star is 05:28:00.4 +28:00:52
Equinox of date position of star is 05:29:06.8 +28:01:40
Stellar brightness R=16.3, use SENSEUP=128
Star is 98 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 29.0 AU from the Sun and 28.0 AU from the Earth.
The TNO is moving 24.1 km/sec on the sky relative to the star, or, 4.3 arcsec/hr.
The 1-sigma error in the time of the event is 1082 seconds.
The 1-sigma cross-track error in the shadow position is 1078 km.
The sky-plane scale is 20315.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 9.9 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2017/12/11 08:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.1 +16:32:38  0.8 16.64 112
Alnath         05:27:25.7 +28:37:15  1.6  0.70  99
22 Aur         05:24:31.2 +28:57:07  6.4  1.37  99
PPM 094373     05:28:09.0 +27:37:26  8.4  0.46  99
PPM 094407     05:30:38.7 +27:51:23  9.5  0.37  98
15875          05:29:08.2 +28:01:41 16.3        98
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 0.8 sigma about the mid-time.
The median site spacing is 24.8 km RECON observability=1.0 and success probability=38.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:00:54 -64.0 Dark Down 69.1 177.6 Up 07:45:54 - 08:15:54 27
Tonasket 08:00:54 -64.2 Dark Down 69.3 177.6 Up 07:45:54 - 08:15:54 -20
Okanogan 08:00:55 -64.6 Dark Down 69.6 177.1 Up 07:45:55 - 08:15:55 -41
Brewster 08:00:56 -64.9 Dark Down 69.9 176.6 Up 07:45:56 - 08:15:56 -67
Manson/Chelan 08:00:57 -65.1 Dark Down 70.1 175.6 Up 07:45:57 - 08:15:57 -87
Entiat 08:00:58 -65.3 Dark Down 70.3 175.4 Up 07:45:58 - 08:15:58 -108
Wenatchee 08:00:58 -65.6 Dark Down 70.5 175.1 Up 07:45:58 - 08:15:58 -135
Ellensburg 08:00:59 -66.0 Dark Down 70.9 174.4 Up 07:45:59 - 08:15:59 -177
Yakima 08:00:59 -66.4 Dark Down 71.4 174.2 Up 07:45:59 - 08:15:59 -219
Toppenish/White Swan 08:00:58 -66.6 Dark Down 71.6 174.6 Up 07:45:58 - 08:15:58 -243
Pasco 08:00:54 -66.7 Dark Down 71.8 178.1 Up 07:45:54 - 08:15:54 -263
PNWRO 08:00:54 -66.9 Dark Down 72.0 178.7 Up 07:45:54 - 08:15:54 -290
George/Umatilla 08:00:55 -67.0 Dark Down 72.1 177.5 Up 07:45:55 - 08:15:55 -297
Goldendale 08:01:00 -67.2 Dark Down 72.1 173.3 Up 07:46:00 - 08:16:00 -298
The Dalles 08:01:01 -67.4 Dark Down 72.3 172.1 Up 07:46:01 - 08:16:01 -320
Maupin 08:01:01 -67.8 Dark Down 72.7 172.3 Up 07:46:01 - 08:16:01 -364
Madras/Culver 08:01:01 -68.4 Dark Down 73.3 171.9 Up 07:46:01 - 08:16:01 -422
Sisters 08:01:03 -68.7 Dark Down 73.5 170.4 Up 07:46:03 - 08:16:03 -454
Redmond 08:01:02 -68.7 Dark Down 73.6 171.6 Up 07:46:02 - 08:16:02 -460
Bend 08:01:02 -69.0 Dark Down 73.8 171.0 Up 07:46:02 - 08:16:02 -482
Oregon Observatory 08:01:03 -69.1 Dark Down 74.0 170.5 Up 07:46:03 - 08:16:03 -499
La Pine/Gilchrist 08:01:03 -69.3 Dark Down 74.1 170.2 Up 07:46:03 - 08:16:03 -520
North Lake 08:01:01 -69.8 Dark Down 74.6 171.9 Up 07:46:01 - 08:16:01 -571
Paisley 08:01:00 -70.3 Dark Down 75.2 172.8 Up 07:46:00 - 08:16:00 -632
Chiloquin 08:01:05 -70.4 Dark Down 75.2 168.3 Up 07:46:05 - 08:16:05 -637
Klamath Falls 08:01:05 -70.8 Dark Down 75.5 168.3 Up 07:46:05 - 08:16:05 -674
Lakeview 08:01:00 -70.8 Dark Down 75.7 173.3 Up 07:46:00 - 08:16:00 -688
Tulelake 08:01:04 -71.1 Dark Down 75.8 169.2 Up 07:46:04 - 08:16:04 -705
Cedarville 08:01:00 -71.4 Dark Down 76.4 173.6 Up 07:46:00 - 08:16:00 -759
Fall River/Burney 08:01:04 -72.0 Dark Down 76.8 168.7 Up 07:46:04 - 08:16:04 -803
Susanville 08:01:01 -72.6 Dark Down 77.5 171.1 Up 07:46:01 - 08:16:01 -877
Greenville 08:01:03 -72.9 Dark Down 77.7 169.7 Up 07:46:03 - 08:16:03 -904
Gimple 08:01:02 -72.9 Dark Down 77.7 170.1 Up 07:46:02 - 08:16:02 -905
Quincy 08:01:03 -73.1 Dark Down 77.9 169.6 Up 07:46:03 - 08:16:03 -926
Niwot 08:00:08 -67.9 Dark Up 73.8 225.8 Up 07:45:08 - 08:15:08 -932
Portola 08:01:01 -73.2 Dark Down 78.1 171.5 Up 07:46:01 - 08:16:01 -943
Reno 08:00:59 -73.4 Dark Down 78.4 174.1 Up 07:45:59 - 08:15:59 -976
Carson City 08:00:59 -73.7 Dark Down 78.8 174.0 Up 07:45:59 - 08:15:59 -1015
Yerington 08:00:57 -73.9 Dark Down 79.0 176.8 Up 07:45:57 - 08:15:57 -1040
Gardnerville 08:00:59 -74.0 Dark Down 79.0 174.1 Up 07:45:59 - 08:15:59 -1042
Hawthorne 08:00:55 -74.2 Dark Down 79.5 179.2 Up 07:45:55 - 08:15:55 -1094
Tonopah 08:00:50 -74.4 Dark Down 79.9 186.2 Up 07:45:50 - 08:15:50 -1152
Lee Vining 08:00:57 -74.9 Dark Down 80.0 176.7 Up 07:45:57 - 08:15:57 -1153
Bishop 08:00:54 -75.3 Dark Down 80.7 180.3 Up 07:45:54 - 08:15:54 -1222
Beatty 08:00:49 -75.4 Dark Down 81.0 189.5 Up 07:45:49 - 08:15:49 -1281
Lone Pine 08:00:54 -76.0 Dark Down 81.4 182.3 Up 07:45:54 - 08:15:54 -1307
Indian Springs 08:00:46 -75.4 Dark Down 81.1 195.9 Up 07:45:46 - 08:15:46 -1321
Henderson 08:00:43 -75.7 Dark Down 81.5 200.8 Up 07:45:43 - 08:15:43 -1382
CPSLO 08:01:04 -77.7 Dark Down 82.5 165.2 Up 07:46:04 - 08:16:04 -1433
Searchlight/Boulder City 08:00:43 -76.2 Dark Down 82.0 202.6 Up 07:45:43 - 08:15:43 -1445
Patrick 08:00:39 -75.8 Dark Down 81.7 208.7 Up 07:45:39 - 08:15:39 -1454
Kingman/Dolan Springs 08:00:39 -76.1 Dark Down 81.9 208.4 Up 07:45:39 - 08:15:39 -1478
Laughlin/Bullhead City 08:00:42 -76.3 Dark Down 82.1 205.5 Up 07:45:42 - 08:15:42 -1479
DCO 08:00:36 -75.7 Dark Down 81.6 213.5 Up 07:45:36 - 08:15:36 -1489
Mohave Valley 08:00:42 -76.5 Dark Down 82.4 206.5 Up 07:45:42 - 08:15:42 -1509
Lake Havasu City 08:00:41 -76.8 Dark Down 82.6 209.4 Up 07:45:41 - 08:15:41 -1554
Wildwood 08:00:57 -78.5 Dark Down 83.9 178.9 Up 07:45:57 - 08:15:57 -1580
Parker 08:00:41 -77.0 Dark Down 82.9 211.0 Up 07:45:41 - 08:15:41 -1593
Idyllwild 08:00:50 -78.4 Dark Down 84.1 195.0 Up 07:45:50 - 08:15:50 -1629
Blythe 08:00:42 -77.6 Dark Down 83.5 211.3 Up 07:45:42 - 08:15:42 -1650
Calipatria 08:00:46 -78.4 Dark Down 84.3 206.7 Up 07:45:46 - 08:15:46 -1701
Yuma 08:00:42 -78.4 Dark Down 84.3 215.8 Up 07:45:42 - 08:15:42 -1752

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, (2017/12/11 08:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 16.64 112
Alnath         05:26:17.5 +28:36:24  1.6  0.70  99
22 Aur         05:23:22.9 +28:56:10  6.4  1.37  99
PPM 094373     05:27:01.4 +27:36:35  8.4  0.46  99
PPM 094407     05:29:31.0 +27:50:36  9.5  0.37  98
15875          05:28:00.4 +28:00:52 16.3        98
Positions are for J2000

Event circumstances last updated at 2017/07/29 16:12:11 UT

Marc W. Buie, Southwest Research Institute

RECON