RECON: TNO occultation with 137295

Event between (137295) 99RB216 and star UC4-476-003385 with event index number of 153757

Geocentric closest approach at 2018/10/11 08:50:11 UTC

J2000 position of star is 02:15:56.6 +05:08:45
Equinox of date position of star is 02:16:49.5 +05:13:24
Stellar brightness R=14.1
Star is 167 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 33.7 AU from the Sun and 32.8 AU from the Earth.
The TNO is moving 23.2 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 194 seconds.
The 1-sigma cross-track error in the shadow position is 3149 km.
The sky-plane scale is 23780.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 8.6 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 137295, (2018/10/11 08:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.0 +16:32:44  0.8 36.12 157
68Omi Cet      02:20:17.8 -02:53:36  2.0  8.17 162
PPM 145462     02:19:00.0 +01:50:44  5.6  3.43 165
PPM 145443     02:17:25.3 +04:42:45  8.3  0.53 167
PPM 145419     02:15:57.7 +04:57:24 10.0  0.37 167
PPM 145427     02:16:18.0 +05:29:49 10.3  0.31 167
137295         02:16:55.6 +05:13:56 14.1       167
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 4.7 sigma about the mid-time.
The median site spacing is 20.0 km RECON observability=1.0 and success probability=1.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Gimple 08:50:39 -9.0 CT Up -1.5 257.4 Not Up 08:35:39 - 09:05:39 12724
Oroville 08:48:58 -46.0 Dark Down 46.2 178.2 Up 08:33:58 - 09:03:58 10422
Tonasket 08:48:59 -46.2 Dark Down 46.4 178.2 Up 08:33:59 - 09:03:59 10405
Okanogan 08:49:00 -46.5 Dark Down 46.8 177.9 Up 08:34:00 - 09:04:00 10385
Brewster 08:49:01 -46.8 Dark Down 47.0 177.6 Up 08:34:01 - 09:04:01 10372
Manson/Chelan 08:49:03 -47.1 Dark Down 47.2 177.1 Up 08:34:03 - 09:04:03 10368
Entiat 08:49:03 -47.3 Dark Down 47.4 177.0 Up 08:34:03 - 09:04:03 10354
Wenatchee 08:49:04 -47.6 Dark Down 47.7 176.8 Up 08:34:04 - 09:04:04 10338
Ellensburg 08:49:05 -48.0 Dark Down 48.1 176.5 Up 08:34:05 - 09:04:05 10314
Yakima 08:49:06 -48.4 Dark Down 48.5 176.4 Up 08:34:06 - 09:04:06 10285
Toppenish/White Swan 08:49:05 -48.6 Dark Down 48.7 176.7 Up 08:34:05 - 09:04:05 10263
Goldendale 08:49:08 -49.2 Dark Down 49.3 176.0 Up 08:34:08 - 09:04:08 10235
The Dalles 08:49:09 -49.5 Dark Down 49.5 175.4 Up 08:34:09 - 09:04:09 10230
Pasco 08:49:02 -48.3 Dark Down 48.9 178.6 Up 08:34:02 - 09:04:02 10213
George/Umatilla 08:49:03 -48.7 Dark Down 49.2 178.2 Up 08:34:03 - 09:04:03 10195
Maupin 08:49:10 -49.8 Dark Down 49.9 175.6 Up 08:34:10 - 09:04:10 10195
PNWRO 08:49:02 -48.5 Dark Down 49.1 178.9 Up 08:34:02 - 09:04:02 10187
Madras/Culver 08:49:10 -50.4 Dark Down 50.4 175.4 Up 08:34:10 - 09:04:10 10154
Sisters 08:49:13 -50.8 Dark Down 50.7 174.7 Up 08:34:13 - 09:04:13 10144
Redmond 08:49:11 -50.7 Dark Down 50.8 175.3 Up 08:34:11 - 09:04:11 10129
Bend 08:49:12 -50.9 Dark Down 51.0 175.1 Up 08:34:12 - 09:04:12 10117
Oregon Observatory 08:49:13 -51.1 Dark Down 51.2 174.9 Up 08:34:13 - 09:04:13 10108
La Pine/Gilchrist 08:49:13 -51.3 Dark Down 51.4 174.7 Up 08:34:13 - 09:04:13 10094
North Lake 08:49:12 -51.6 Dark Down 51.8 175.7 Up 08:34:12 - 09:04:12 10040
Chiloquin 08:49:16 -52.5 Dark Down 52.4 174.1 Up 08:34:16 - 09:04:16 10019
Klamath Falls 08:49:16 -52.8 Dark Down 52.8 174.1 Up 08:34:16 - 09:04:16 9989
Paisley 08:49:12 -52.0 Dark Down 52.4 176.2 Up 08:34:12 - 09:04:12 9984
Tulelake 08:49:15 -52.9 Dark Down 53.1 174.6 Up 08:34:15 - 09:04:15 9957
Lakeview 08:49:12 -52.4 Dark Down 52.9 176.5 Up 08:34:12 - 09:04:12 9937
Fall River/Burney 08:49:17 -53.7 Dark Down 54.0 174.6 Up 08:34:17 - 09:04:17 9882
Cedarville 08:49:13 -52.9 Dark Down 53.6 176.7 Up 08:34:13 - 09:04:13 9879
Susanville 08:49:15 -54.1 Dark Down 54.7 175.8 Up 08:34:15 - 09:04:15 9805
Greenville 08:49:17 -54.4 Dark Down 54.9 175.3 Up 08:34:17 - 09:04:17 9793
Quincy 08:49:17 -54.6 Dark Down 55.1 175.3 Up 08:34:17 - 09:04:17 9776
Portola 08:49:16 -54.5 Dark Down 55.3 176.1 Up 08:34:16 - 09:04:16 9749
Reno 08:49:14 -54.5 Dark Down 55.6 177.2 Up 08:34:14 - 09:04:14 9704
Carson City 08:49:15 -54.9 Dark Down 55.9 177.2 Up 08:34:15 - 09:04:15 9673
Gardnerville 08:49:15 -55.1 Dark Down 56.2 177.3 Up 08:34:15 - 09:04:15 9651
Yerington 08:49:13 -54.8 Dark Down 56.1 178.3 Up 08:34:13 - 09:04:13 9634
Hawthorne 08:49:13 -55.0 Dark Down 56.6 179.3 Up 08:34:13 - 09:04:13 9576
Lee Vining 08:49:15 -55.7 Dark Down 57.2 178.4 Up 08:34:15 - 09:04:15 9547
Tonopah 08:49:09 -54.8 Dark Down 57.1 181.8 Up 08:34:09 - 09:04:09 9486
Bishop 08:49:13 -55.9 Dark Down 57.8 179.7 Up 08:34:13 - 09:04:13 9469
Lone Pine 08:49:14 -56.4 Dark Down 58.5 180.3 Up 08:34:14 - 09:04:14 9391
CPSLO 08:49:25 -58.6 Dark Down 59.8 175.3 Up 08:34:25 - 09:04:25 9375
Beatty 08:49:09 -55.6 Dark Down 58.2 182.7 Up 08:34:09 - 09:04:09 9370
Indian Springs 08:49:06 -55.3 Dark Down 58.5 184.8 Up 08:34:06 - 09:04:06 9302
Niwot 08:48:25 -47.3 Dark Down 53.2 201.7 Up 08:33:25 - 09:03:25 9254
Henderson 08:49:04 -55.4 Dark Down 59.0 186.2 Up 08:34:04 - 09:04:04 9229
Wildwood 08:49:20 -58.7 Dark Down 61.1 179.3 Up 08:34:20 - 09:04:20 9191
Searchlight/Boulder City 08:49:05 -55.8 Dark Down 59.5 186.4 Up 08:34:05 - 09:04:05 9176
Laughlin/Bullhead City 08:49:04 -55.9 Dark Down 59.8 187.2 Up 08:34:04 - 09:04:04 9137
Patrick 08:49:01 -55.4 Dark Down 59.5 188.5 Up 08:34:01 - 09:04:01 9133
Kingman/Dolan Springs 08:49:03 -55.6 Dark Down 59.7 188.2 Up 08:34:03 - 09:04:03 9120
Mohave Valley 08:49:05 -56.1 Dark Down 60.1 187.2 Up 08:34:05 - 09:04:05 9112
Idyllwild 08:49:14 -58.1 Dark Down 61.4 183.1 Up 08:34:14 - 09:04:14 9088
DCO 08:48:59 -55.2 Dark Down 59.7 189.9 Up 08:33:59 - 09:03:59 9080
Lake Havasu City 08:49:04 -56.3 Dark Down 60.4 187.8 Up 08:34:04 - 09:04:04 9067
Parker 08:49:05 -56.5 Dark Down 60.8 188.0 Up 08:34:05 - 09:04:05 9034
Blythe 08:49:07 -57.1 Dark Down 61.3 187.5 Up 08:34:07 - 09:04:07 8998
Calipatria 08:49:10 -58.0 Dark Down 61.9 185.7 Up 08:34:10 - 09:04:10 8988
Yuma 08:49:09 -57.8 Dark Down 62.3 187.7 Up 08:34:09 - 09:04:09 8915

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 137295, (2018/10/11 08:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 36.12 157
68Omi Cet      02:19:20.8 -02:58:44  2.0  8.17 162
PPM 145462     02:18:01.8 +01:45:34  5.6  3.43 165
PPM 145443     02:16:26.4 +04:37:34  8.3  0.53 167
PPM 145419     02:14:58.8 +04:52:11 10.0  0.37 167
PPM 145427     02:15:18.9 +05:24:37 10.3  0.31 167
137295         02:15:56.6 +05:08:45 14.1       167
Positions are for J2000

Event circumstances last updated at 2016/11/02 17:57:33 UT

Marc W. Buie, Southwest Research Institute

RECON