RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star UC4-683-027108 with event index number of 105809

Geocentric closest approach at 2018/03/03 03:04:28 UTC

J2000 position of star is 04:06:44.2 +46:33:08
Equinox of date position of star is 04:08:01.7 +46:35:57
Stellar brightness R=14.3, use SENSEUP=64
Star is 105 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 15.7 AU from the Sun and 15.7 AU from the Earth.
The TNO is moving 17.3 km/sec on the sky relative to the star, or, 5.4 arcsec/hr.
The 1-sigma error in the time of the event is 276 seconds.
The 1-sigma cross-track error in the shadow position is 5836 km.
The sky-plane scale is 11413.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 6.6 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 341275, (2018/03/03 03:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.9 +16:32:40  0.8 30.65 107
Mirphak        03:25:37.8 +49:55:28  1.8  7.79 109
48 Per         04:09:59.2 +47:45:34  4.0  1.21 104
PPM 046821     04:09:44.1 +46:24:47  8.5  0.35 104
PPM 046776     04:06:26.8 +46:40:43  9.8  0.29 105
341275         04:08:02.7 +46:36:00 14.3       104
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 3.3 sigma about the mid-time.
The median site spacing is 17.5 km RECON observability=0.4 and success probability=5.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 03:06:26 -26.0 Dark Up 60.1 296.1 Up 02:51:26 - 03:21:26 5272
Oroville 03:05:15 -14.3 AT Up 72.4 272.1 Up 02:50:15 - 03:20:15 4624
Tonasket 03:05:17 -14.3 AT Up 72.4 272.8 Up 02:50:17 - 03:20:17 4614
Okanogan 03:05:20 -14.3 AT Up 72.5 273.8 Up 02:50:20 - 03:20:20 4588
Brewster 03:05:20 -14.2 AT Up 72.6 274.6 Up 02:50:20 - 03:20:20 4563
Manson/Chelan 03:05:20 -13.9 AT Up 72.8 275.0 Up 02:50:20 - 03:20:20 4529
PNWRO 03:05:34 -15.0 AT Up 71.7 281.4 Up 02:50:34 - 03:20:34 4524
Pasco 03:05:31 -14.8 AT Up 71.9 280.6 Up 02:50:31 - 03:20:31 4521
Entiat 03:05:21 -13.9 AT Up 72.8 275.7 Up 02:50:21 - 03:20:21 4514
Wenatchee 03:05:23 -13.9 AT Up 72.9 276.5 Up 02:50:23 - 03:20:23 4495
George/Umatilla 03:05:33 -14.7 AT Up 71.9 281.5 Up 02:50:33 - 03:20:33 4490
Ellensburg 03:05:25 -13.8 AT Up 73.0 277.7 Up 02:50:25 - 03:20:25 4461
DCO 03:06:46 -20.7 Dark Up 63.0 305.1 Up 02:51:46 - 03:21:46 4454
Toppenish/White Swan 03:05:29 -13.9 AT Up 72.8 279.8 Up 02:50:29 - 03:20:29 4441
Yakima 03:05:27 -13.8 AT Up 72.9 279.0 Up 02:50:27 - 03:20:27 4440
Patrick 03:06:43 -20.1 Dark Up 63.6 304.9 Up 02:51:43 - 03:21:43 4411
Kingman/Dolan Springs 03:06:44 -20.0 Dark Up 63.6 305.3 Up 02:51:44 - 03:21:44 4386
Goldendale 03:05:31 -13.7 AT Up 72.9 281.4 Up 02:50:31 - 03:20:31 4385
Henderson 03:06:37 -19.1 Dark Up 64.8 304.2 Up 02:51:37 - 03:21:37 4351
The Dalles 03:05:32 -13.4 AT Up 73.1 282.0 Up 02:50:32 - 03:20:32 4350
Laughlin/Bullhead City 03:06:44 -19.6 Dark Up 64.0 305.5 Up 02:51:44 - 03:21:44 4343
Maupin 03:05:35 -13.5 AT Up 73.0 283.4 Up 02:50:35 - 03:20:35 4336
Lake Havasu City 03:06:47 -19.8 Dark Up 63.4 306.5 Up 02:51:47 - 03:21:47 4333
Mohave Valley 03:06:45 -19.6 Dark Up 63.8 306.0 Up 02:51:45 - 03:21:45 4331
Searchlight/Boulder City 03:06:41 -19.2 Dark Up 64.4 305.2 Up 02:51:41 - 03:21:41 4329
Indian Springs 03:06:33 -18.5 Dark Up 65.5 303.5 Up 02:51:33 - 03:21:33 4321
Parker 03:06:49 -19.9 Dark Up 63.2 307.1 Up 02:51:49 - 03:21:49 4319
Madras/Culver 03:05:38 -13.6 AT Up 72.9 285.1 Up 02:50:38 - 03:20:38 4306
Redmond 03:05:38 -13.5 AT Up 72.8 286.2 Up 02:50:38 - 03:20:38 4285
Tonopah 03:06:22 -17.1 AT Up 67.4 301.2 Up 02:51:22 - 03:21:22 4271
Blythe 03:06:52 -19.7 Dark Up 63.0 308.0 Up 02:51:52 - 03:21:52 4270
Bend 03:05:38 -13.5 AT Up 72.8 286.9 Up 02:50:38 - 03:20:38 4265
Sisters 03:05:38 -13.3 AT Up 73.1 286.1 Up 02:50:38 - 03:20:38 4258
Paisley 03:05:38 -14.1 AT Up 71.9 290.9 Up 02:50:38 - 03:20:38 4255
North Lake 03:05:38 -13.8 AT Up 72.3 289.3 Up 02:50:38 - 03:20:38 4255
Beatty 03:06:29 -17.6 AT Up 66.5 303.3 Up 02:51:29 - 03:21:29 4251
Lakeview 03:05:38 -14.3 AT Up 71.5 292.3 Up 02:50:38 - 03:20:38 4247
Oregon Observatory 03:05:38 -13.4 AT Up 72.9 287.4 Up 02:50:38 - 03:20:38 4247
La Pine/Gilchrist 03:05:38 -13.3 AT Up 72.8 288.1 Up 02:50:38 - 03:20:38 4233
Cedarville 03:05:38 -14.5 AT Up 71.2 294.0 Up 02:50:38 - 03:20:38 4232
Yuma 03:06:57 -19.8 Dark Up 62.5 309.4 Up 02:51:57 - 03:21:57 4223
Hawthorne 03:06:17 -16.0 AT Up 68.6 300.8 Up 02:51:17 - 03:21:17 4185
Reno 03:05:38 -14.8 AT Up 70.0 299.0 Up 02:50:38 - 03:20:38 4181
Calipatria 03:06:53 -19.0 Dark Up 63.3 309.2 Up 02:51:53 - 03:21:53 4170
Carson City 03:05:38 -14.9 AT Up 69.8 299.8 Up 02:50:38 - 03:20:38 4169
Yerington 03:06:13 -15.5 AT Up 69.2 300.0 Up 02:51:13 - 03:21:13 4168
Chiloquin 03:05:38 -13.1 AT Up 72.7 291.5 Up 02:50:38 - 03:20:38 4154
Tulelake 03:05:38 -13.5 AT Up 72.2 293.2 Up 02:50:38 - 03:20:38 4153
Susanville 03:05:38 -14.2 AT Up 71.0 297.1 Up 02:50:38 - 03:20:38 4150
Bishop 03:06:24 -16.2 AT Up 67.8 303.1 Up 02:51:24 - 03:21:24 4146
Klamath Falls 03:05:38 -13.2 AT Up 72.5 292.5 Up 02:50:38 - 03:20:38 4144
Portola 03:05:38 -14.3 AT Up 70.6 298.6 Up 02:50:38 - 03:20:38 4140
Lone Pine 03:06:29 -16.6 AT Up 67.2 304.5 Up 02:51:29 - 03:21:29 4135
Gimple 03:05:38 -14.0 AT Up 71.0 297.9 Up 02:50:38 - 03:20:38 4122
Gardnerville 03:06:13 -15.0 AT Up 69.6 300.3 Up 02:51:13 - 03:21:13 4121
Lee Vining 03:06:19 -15.6 AT Up 68.6 302.2 Up 02:51:19 - 03:21:19 4120
Fall River/Burney 03:05:38 -13.6 AT Up 71.8 295.7 Up 02:50:38 - 03:20:38 4119
Greenville 03:05:38 -13.9 AT Up 71.1 297.9 Up 02:50:38 - 03:20:38 4116
Quincy 03:05:38 -14.0 AT Up 71.0 298.5 Up 02:50:38 - 03:20:38 4108
Idyllwild 03:06:47 -17.9 AT Up 64.5 308.9 Up 02:51:47 - 03:21:47 4102
Wildwood 03:06:42 -16.3 AT Up 66.0 309.4 Up 02:51:42 - 03:21:42 3967
CPSLO 03:06:31 -14.5 AT Up 68.1 308.5 Up 02:51:31 - 03:21:31 3864

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 341275, (2018/03/03 03:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 30.65 107
Mirphak        03:24:19.4 +49:51:40  1.8  7.79 109
48 Per         04:08:39.7 +47:42:45  4.0  1.21 104
PPM 046821     04:08:25.7 +46:21:58  8.5  0.35 104
PPM 046776     04:05:08.4 +46:37:49  9.8  0.29 105
341275         04:06:44.2 +46:33:08 14.3       105
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:19:10 UT

Marc W. Buie, Southwest Research Institute

RECON