RECON: TNO occultation with 00YE2

Event between 00YE2 and star UC4-554-015767 with event index number of 92878

Geocentric closest approach at 2017/12/30 04:58:00 UTC

J2000 position of star is 05:33:03.8 +20:47:54
Equinox of date position of star is 05:34:05.9 +20:48:34
Stellar brightness R=16.3, use SENSEUP=128
Star is 26 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 38.4 AU from the Sun and 37.5 AU from the Earth.
The TNO is moving 24.0 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 528 seconds.
The 1-sigma cross-track error in the shadow position is 1696 km.
The sky-plane scale is 27167.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.7 km assuming a 5% albedo -- 5.6 sec chord
Diameter=54.6 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 00YE2, (2017/12/30 04:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.3 +16:32:39  0.8 14.19  12
Alnath         05:27:25.9 +28:37:16  1.6  7.96  27
PPM 094484     05:34:43.1 +20:29:07  6.0  0.35  26
PPM 094449     05:32:58.8 +20:46:21  8.9  0.27  26
00YE2          05:34:08.2 +20:48:36 16.3        26
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 1.7 sigma about the mid-time.
The median site spacing is 23.6 km RECON observability=1.0 and success probability=7.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:59:20 -46.2 Dark Up 53.6 130.2 Up 04:44:20 - 05:14:20 4823
Tonasket 04:59:21 -46.3 Dark Up 53.7 129.9 Up 04:44:21 - 05:14:21 4802
Okanogan 04:59:22 -46.3 Dark Up 53.9 129.4 Up 04:44:22 - 05:14:22 4773
Brewster 04:59:23 -46.3 Dark Up 53.9 128.8 Up 04:44:23 - 05:14:23 4750
Manson/Chelan 04:59:24 -46.1 Dark Up 53.9 128.1 Up 04:44:24 - 05:14:24 4737
Entiat 04:59:25 -46.1 Dark Up 54.0 127.8 Up 04:44:25 - 05:14:25 4717
Wenatchee 04:59:26 -46.1 Dark Up 54.1 127.4 Up 04:44:26 - 05:14:26 4695
Ellensburg 04:59:27 -46.1 Dark Up 54.2 126.7 Up 04:44:27 - 05:14:27 4660
Yakima 04:59:28 -46.2 Dark Up 54.4 126.2 Up 04:44:28 - 05:14:28 4621
Toppenish/White Swan 04:59:28 -46.4 Dark Up 54.7 126.2 Up 04:44:28 - 05:14:28 4598
Pasco 04:59:25 -47.3 Dark Up 55.4 127.7 Up 04:44:25 - 05:14:25 4566
Goldendale 04:59:30 -46.3 Dark Up 54.8 125.0 Up 04:44:30 - 05:14:30 4553
PNWRO 04:59:24 -47.5 Dark Up 55.7 127.7 Up 04:44:24 - 05:14:24 4539
George/Umatilla 04:59:26 -47.2 Dark Up 55.5 127.0 Up 04:44:26 - 05:14:26 4538
The Dalles 04:59:32 -46.1 Dark Up 54.7 124.3 Up 04:44:32 - 05:14:32 4537
Maupin 04:59:32 -46.3 Dark Up 55.0 123.9 Up 04:44:32 - 05:14:32 4496
Madras/Culver 04:59:33 -46.4 Dark Up 55.3 123.2 Up 04:44:33 - 05:14:33 4444
Sisters 04:59:34 -46.1 Dark Up 55.2 122.2 Up 04:44:34 - 05:14:34 4420
Redmond 04:59:34 -46.4 Dark Up 55.4 122.7 Up 04:44:34 - 05:14:34 4411
Bend 04:59:34 -46.4 Dark Up 55.5 122.3 Up 04:44:34 - 05:14:34 4392
Oregon Observatory 04:59:35 -46.3 Dark Up 55.5 121.9 Up 04:44:35 - 05:14:35 4378
La Pine/Gilchrist 04:59:35 -46.3 Dark Up 55.5 121.6 Up 04:44:35 - 05:14:35 4359
North Lake 04:59:34 -46.8 Dark Up 56.1 121.8 Up 04:44:34 - 05:14:34 4306
Chiloquin 04:59:38 -46.3 Dark Up 55.9 119.8 Up 04:44:38 - 05:14:38 4257
Paisley 04:59:35 -47.2 Dark Up 56.7 121.5 Up 04:44:35 - 05:14:35 4246
Klamath Falls 04:59:38 -46.4 Dark Up 56.1 119.4 Up 04:44:38 - 05:14:38 4222
Lakeview 04:59:35 -47.5 Dark Up 57.0 121.1 Up 04:44:35 - 05:14:35 4193
Tulelake 04:59:38 -46.7 Dark Up 56.4 119.4 Up 04:44:38 - 05:14:38 4190
Cedarville 04:59:35 -47.7 Dark Up 57.5 120.5 Up 04:44:35 - 05:14:35 4125
Fall River/Burney 04:59:40 -46.9 Dark Up 56.9 118.3 Up 04:44:40 - 05:14:40 4099
Susanville 04:59:38 -47.6 Dark Up 57.7 118.4 Up 04:44:38 - 05:14:38 4023
Greenville 04:59:40 -47.4 Dark Up 57.7 117.6 Up 04:44:40 - 05:14:40 4001
Gimple 04:59:40 -47.5 Dark Up 57.7 117.7 Up 04:44:40 - 05:14:40 3999
Quincy 04:59:40 -47.4 Dark Up 57.8 117.3 Up 04:44:40 - 05:14:40 3981
Portola 04:59:39 -47.8 Dark Up 58.1 117.7 Up 04:44:39 - 05:14:39 3960
Reno 04:59:38 -48.3 Dark Up 58.7 118.1 Up 04:44:38 - 05:14:38 3921
Carson City 04:59:38 -48.4 Dark Up 58.9 117.6 Up 04:44:38 - 05:14:38 3885
Gardnerville 04:59:38 -48.5 Dark Up 59.0 117.3 Up 04:44:38 - 05:14:38 3859
Yerington 04:59:36 -48.9 Dark Up 59.4 118.1 Up 04:44:36 - 05:14:36 3854
Hawthorne 04:59:35 -49.4 Dark Up 60.0 118.1 Up 04:44:35 - 05:14:35 3797
Niwot 04:58:49 -58.8 Dark Up 66.9 142.3 Up 04:43:49 - 05:13:49 3766
Lee Vining 04:59:38 -49.1 Dark Up 59.9 116.6 Up 04:44:38 - 05:14:38 3749
Tonopah 04:59:32 -50.6 Dark Up 61.2 119.2 Up 04:44:32 - 05:14:32 3725
Bishop 04:59:36 -49.8 Dark Up 60.7 116.6 Up 04:44:36 - 05:14:36 3674
Beatty 04:59:32 -51.1 Dark Up 62.0 117.9 Up 04:44:32 - 05:14:32 3598
Lone Pine 04:59:36 -50.1 Dark Up 61.3 115.8 Up 04:44:36 - 05:14:36 3590
Indian Springs 04:59:29 -52.0 Dark Up 63.0 118.8 Up 04:44:29 - 05:14:29 3546
CPSLO 04:59:47 -48.2 Dark Up 59.9 110.7 Up 04:44:47 - 05:14:47 3505
Henderson 04:59:27 -52.6 Dark Up 63.7 118.8 Up 04:44:27 - 05:14:27 3479
Searchlight/Boulder City 04:59:28 -52.8 Dark Up 64.0 117.8 Up 04:44:28 - 05:14:28 3419
Patrick 04:59:24 -53.6 Dark Up 64.8 119.2 Up 04:44:24 - 05:14:24 3396
Laughlin/Bullhead City 04:59:27 -53.1 Dark Up 64.4 117.7 Up 04:44:27 - 05:14:27 3382
Kingman/Dolan Springs 04:59:25 -53.5 Dark Up 64.8 118.5 Up 04:44:25 - 05:14:25 3376
Mohave Valley 04:59:27 -53.1 Dark Up 64.5 117.2 Up 04:44:27 - 05:14:27 3353
DCO 04:59:23 -54.2 Dark Up 65.4 119.6 Up 04:44:23 - 05:14:23 3352
Wildwood 04:59:41 -49.9 Dark Up 61.9 110.9 Up 04:44:41 - 05:14:41 3340
Lake Havasu City 04:59:27 -53.4 Dark Up 64.9 116.8 Up 04:44:27 - 05:14:27 3307
Parker 04:59:27 -53.4 Dark Up 65.1 116.2 Up 04:44:27 - 05:14:27 3270
Idyllwild 04:59:36 -51.5 Dark Up 63.4 112.4 Up 04:44:36 - 05:14:36 3269
Blythe 04:59:29 -53.3 Dark Up 65.1 114.8 Up 04:44:29 - 05:14:29 3219
Calipatria 04:59:33 -52.5 Dark Up 64.6 112.7 Up 04:44:33 - 05:14:33 3183
Yuma 04:59:30 -53.3 Dark Up 65.4 112.9 Up 04:44:30 - 05:14:30 3122

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 00YE2, (2017/12/30 04:58UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 14.19  12
Alnath         05:26:17.5 +28:36:24  1.6  7.96  27
PPM 094484     05:33:38.8 +20:28:27  6.0  0.35  26
PPM 094449     05:31:54.4 +20:45:37  8.9  0.27  26
00YE2          05:33:03.8 +20:47:54 16.3        26
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:33:53 UT

Marc W. Buie, Southwest Research Institute

RECON