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 05:34:07.9 +20:48:35
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 535 seconds.
The 1-sigma cross-track error in the shadow position is 1704 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 23.8 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 04:59:21 -46.2 Dark Up 53.6 130.2 Up 04:44:21 - 05:14:21 4827
Tonasket 04:59:22 -46.3 Dark Up 53.7 129.9 Up 04:44:22 - 05:14:22 4806
Okanogan 04:59:23 -46.3 Dark Up 53.9 129.4 Up 04:44:23 - 05:14:23 4777
Brewster 04:59:23 -46.3 Dark Up 53.9 128.8 Up 04:44:23 - 05:14:23 4755
Manson/Chelan 04:59:25 -46.1 Dark Up 53.9 128.1 Up 04:44:25 - 05:14:25 4741
Entiat 04:59:26 -46.1 Dark Up 54.0 127.8 Up 04:44:26 - 05:14:26 4721
Wenatchee 04:59:26 -46.1 Dark Up 54.1 127.4 Up 04:44:26 - 05:14:26 4699
Ellensburg 04:59:27 -46.1 Dark Up 54.2 126.7 Up 04:44:27 - 05:14:27 4664
Yakima 04:59:28 -46.2 Dark Up 54.4 126.2 Up 04:44:28 - 05:14:28 4626
Toppenish/White Swan 04:59:28 -46.4 Dark Up 54.7 126.2 Up 04:44:28 - 05:14:28 4603
Pasco 04:59:25 -47.3 Dark Up 55.4 127.7 Up 04:44:25 - 05:14:25 4570
Goldendale 04:59:30 -46.3 Dark Up 54.8 125.0 Up 04:44:30 - 05:14:30 4557
PNWRO 04:59:25 -47.5 Dark Up 55.7 127.7 Up 04:44:25 - 05:14:25 4543
George/Umatilla 04:59:26 -47.2 Dark Up 55.5 127.0 Up 04:44:26 - 05:14:26 4542
The Dalles 04:59:32 -46.1 Dark Up 54.7 124.3 Up 04:44:32 - 05:14:32 4542
Maupin 04:59:33 -46.3 Dark Up 55.0 123.9 Up 04:44:33 - 05:14:33 4500
Madras/Culver 04:59:34 -46.4 Dark Up 55.3 123.2 Up 04:44:34 - 05:14:34 4448
Sisters 04:59:36 -46.1 Dark Up 55.2 122.3 Up 04:44:36 - 05:14:36 4424
Redmond 04:59:35 -46.4 Dark Up 55.4 122.7 Up 04:44:35 - 05:14:35 4415
Bend 04:59:35 -46.4 Dark Up 55.5 122.3 Up 04:44:35 - 05:14:35 4397
Oregon Observatory 04:59:36 -46.3 Dark Up 55.5 121.9 Up 04:44:36 - 05:14:36 4382
La Pine/Gilchrist 04:59:36 -46.3 Dark Up 55.5 121.6 Up 04:44:36 - 05:14:36 4363
North Lake 04:59:35 -46.8 Dark Up 56.1 121.8 Up 04:44:35 - 05:14:35 4311
Chiloquin 04:59:39 -46.3 Dark Up 55.9 119.8 Up 04:44:39 - 05:14:39 4262
Paisley 04:59:36 -47.2 Dark Up 56.7 121.5 Up 04:44:36 - 05:14:36 4251
Klamath Falls 04:59:40 -46.4 Dark Up 56.1 119.4 Up 04:44:40 - 05:14:40 4227
Lakeview 04:59:36 -47.5 Dark Up 57.0 121.1 Up 04:44:36 - 05:14:36 4197
Tulelake 04:59:39 -46.7 Dark Up 56.4 119.4 Up 04:44:39 - 05:14:39 4195
Cedarville 04:59:37 -47.7 Dark Up 57.5 120.5 Up 04:44:37 - 05:14:37 4130
Fall River/Burney 04:59:41 -46.9 Dark Up 56.9 118.3 Up 04:44:41 - 05:14:41 4104
Susanville 04:59:40 -47.6 Dark Up 57.7 118.4 Up 04:44:40 - 05:14:40 4028
Greenville 04:59:41 -47.4 Dark Up 57.7 117.6 Up 04:44:41 - 05:14:41 4006
Gimple 04:59:41 -47.5 Dark Up 57.7 117.7 Up 04:44:41 - 05:14:41 4004
Quincy 04:59:41 -47.4 Dark Up 57.8 117.3 Up 04:44:41 - 05:14:41 3985
Portola 04:59:40 -47.8 Dark Up 58.1 117.7 Up 04:44:40 - 05:14:40 3964
Reno 04:59:38 -48.3 Dark Up 58.7 118.1 Up 04:44:38 - 05:14:38 3926
Carson City 04:59:39 -48.4 Dark Up 58.9 117.7 Up 04:44:39 - 05:14:39 3889
Gardnerville 04:59:39 -48.5 Dark Up 59.0 117.3 Up 04:44:39 - 05:14:39 3864
Yerington 04:59:37 -48.9 Dark Up 59.4 118.1 Up 04:44:37 - 05:14:37 3858
Hawthorne 04:59:36 -49.4 Dark Up 60.0 118.1 Up 04:44:36 - 05:14:36 3801
Niwot 04:58:50 -58.8 Dark Up 66.9 142.3 Up 04:43:50 - 05:13:50 3768
Lee Vining 04:59:39 -49.1 Dark Up 59.9 116.6 Up 04:44:39 - 05:14:39 3753
Tonopah 04:59:33 -50.6 Dark Up 61.2 119.2 Up 04:44:33 - 05:14:33 3729
Bishop 04:59:37 -49.8 Dark Up 60.7 116.6 Up 04:44:37 - 05:14:37 3679
Beatty 04:59:33 -51.1 Dark Up 62.0 117.9 Up 04:44:33 - 05:14:33 3603
Lone Pine 04:59:38 -50.1 Dark Up 61.3 115.8 Up 04:44:38 - 05:14:38 3595
Indian Springs 04:59:30 -52.0 Dark Up 63.0 118.8 Up 04:44:30 - 05:14:30 3551
CPSLO 04:59:48 -48.2 Dark Up 59.9 110.7 Up 04:44:48 - 05:14:48 3510
Henderson 04:59:28 -52.6 Dark Up 63.7 118.8 Up 04:44:28 - 05:14:28 3483
Searchlight/Boulder City 04:59:29 -52.8 Dark Up 64.0 117.8 Up 04:44:29 - 05:14:29 3423
Patrick 04:59:25 -53.6 Dark Up 64.8 119.2 Up 04:44:25 - 05:14:25 3400
Laughlin/Bullhead City 04:59:28 -53.1 Dark Up 64.4 117.7 Up 04:44:28 - 05:14:28 3386
Kingman/Dolan Springs 04:59:26 -53.5 Dark Up 64.8 118.5 Up 04:44:26 - 05:14:26 3380
Mohave Valley 04:59:28 -53.1 Dark Up 64.5 117.2 Up 04:44:28 - 05:14:28 3357
DCO 04:59:23 -54.2 Dark Up 65.4 119.6 Up 04:44:23 - 05:14:23 3356
Wildwood 04:59:43 -49.9 Dark Up 61.9 110.9 Up 04:44:43 - 05:14:43 3345
Lake Havasu City 04:59:28 -53.4 Dark Up 64.9 116.8 Up 04:44:28 - 05:14:28 3311
Parker 04:59:28 -53.4 Dark Up 65.1 116.2 Up 04:44:28 - 05:14:28 3274
Idyllwild 04:59:37 -51.5 Dark Up 63.4 112.4 Up 04:44:37 - 05:14:37 3273
Blythe 04:59:30 -53.3 Dark Up 65.1 114.8 Up 04:44:30 - 05:14:30 3224
Calipatria 04:59:34 -52.5 Dark Up 64.6 112.7 Up 04:44:34 - 05:14:34 3188
Yuma 04:59:31 -53.3 Dark Up 65.4 112.9 Up 04:44:31 - 05:14:31 3127

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 2017/12/02 17:09:19 UT

Marc W. Buie, Southwest Research Institute

RECON