RECON: TNO occultation with 14YY49

Event between 14YY49 and star UC4-456-029280 with event index number of 173567

Geocentric closest approach at 2018/12/27 07:37:31 UTC

J2000 position of star is 07:05:15.0 +01:11:31
Equinox of date position of star is 07:06:10.6 +01:09:49
Stellar brightness R=16.3, use SENSEUP=128
Star is 56 degrees from the moon. Moon is 73% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 18.6 AU from the Sun and 17.7 AU from the Earth.
The TNO is moving 22.6 km/sec on the sky relative to the star, or, 6.3 arcsec/hr.
The 1-sigma error in the time of the event is 119 seconds.
The 1-sigma cross-track error in the shadow position is 663 km.
The sky-plane scale is 12837.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.1
Diameter=58.3 km assuming a 5% albedo -- 2.6 sec chord
Diameter=23.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14YY49, (2018/12/27 07:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:12.0 +07:24:33  0.4 18.53  71
Alhena         06:38:48.5 +16:22:53  1.9 16.65  60
21 Mon         07:12:21.8 -00:20:06  5.5  2.14  54
PPM 151883     07:05:53.8 +01:03:50  8.5  0.13  56
14YY49         07:06:13.8 +01:09:43 16.3        55
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 5.0 sigma about the mid-time.
The median site spacing is 21.1 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:38:29 -64.1 Dark Up 40.5 159.6 Up 07:28:03 - 07:48:55 7738
Tonasket 07:38:29 -64.3 Dark Up 40.7 159.5 Up 07:28:03 - 07:48:55 7720
Okanogan 07:38:30 -64.6 Dark Up 41.0 159.2 Up 07:28:04 - 07:48:56 7694
Brewster 07:38:31 -64.9 Dark Up 41.2 158.9 Up 07:28:05 - 07:48:57 7673
Manson/Chelan 07:38:32 -65.0 Dark Up 41.3 158.4 Up 07:28:06 - 07:48:58 7656
Entiat 07:38:33 -65.2 Dark Up 41.5 158.2 Up 07:28:07 - 07:48:59 7639
Wenatchee 07:38:33 -65.5 Dark Up 41.7 158.0 Up 07:28:07 - 07:48:59 7619
Ellensburg 07:38:34 -65.8 Dark Up 42.0 157.6 Up 07:28:08 - 07:49:00 7586
Yakima 07:38:35 -66.2 Dark Up 42.4 157.4 Up 07:28:09 - 07:49:01 7554
Toppenish/White Swan 07:38:34 -66.4 Dark Up 42.6 157.6 Up 07:28:08 - 07:49:00 7537
Pasco 07:38:30 -66.8 Dark Up 43.0 159.2 Up 07:28:04 - 07:48:56 7531
PNWRO 07:38:30 -67.0 Dark Up 43.3 159.4 Up 07:28:04 - 07:48:56 7512
George/Umatilla 07:38:31 -67.1 Dark Up 43.3 158.8 Up 07:28:05 - 07:48:57 7504
Goldendale 07:38:36 -66.9 Dark Up 43.0 156.8 Up 07:28:10 - 07:49:02 7492
The Dalles 07:38:38 -67.1 Dark Up 43.1 156.3 Up 07:28:12 - 07:49:04 7473
Maupin 07:38:38 -67.5 Dark Up 43.5 156.2 Up 07:28:12 - 07:49:04 7440
Madras/Culver 07:38:38 -68.0 Dark Up 44.0 156.0 Up 07:28:12 - 07:49:04 7395
Sisters 07:38:40 -68.2 Dark Up 44.2 155.2 Up 07:28:14 - 07:49:06 7367
Redmond 07:38:39 -68.3 Dark Up 44.3 155.8 Up 07:28:13 - 07:49:05 7366
Bend 07:38:39 -68.5 Dark Up 44.5 155.5 Up 07:28:13 - 07:49:05 7348
Oregon Observatory 07:38:40 -68.6 Dark Up 44.6 155.2 Up 07:28:14 - 07:49:06 7333
La Pine/Gilchrist 07:38:40 -68.8 Dark Up 44.8 155.1 Up 07:28:14 - 07:49:06 7316
North Lake 07:38:39 -69.4 Dark Up 45.3 155.7 Up 07:28:13 - 07:49:05 7282
Paisley 07:38:38 -70.0 Dark Up 46.0 156.0 Up 07:28:12 - 07:49:04 7237
Chiloquin 07:38:40 -69.8 Dark Up 45.7 154.1 Up 07:28:14 - 07:49:06 7223
Lakeview 07:38:38 -70.5 Dark Up 46.5 156.0 Up 07:28:12 - 07:49:04 7194
Klamath Falls 07:38:40 -70.1 Dark Up 46.0 154.1 Up 07:28:14 - 07:49:06 7194
Tulelake 07:38:40 -70.5 Dark Up 46.3 154.4 Up 07:28:14 - 07:49:06 7172
Cedarville 07:38:38 -71.2 Dark Up 47.1 156.0 Up 07:28:12 - 07:49:04 7139
Fall River/Burney 07:38:40 -71.3 Dark Up 47.2 154.1 Up 07:28:14 - 07:49:06 7095
Niwot 07:37:44 -71.6 Dark Up 51.1 177.9 Up 07:27:18 - 07:48:10 7063
Susanville 07:38:40 -72.1 Dark Up 48.0 154.8 Up 07:28:14 - 07:49:06 7042
Gimple 07:38:40 -72.3 Dark Up 48.2 154.4 Up 07:28:14 - 07:49:06 7017
Greenville 07:38:40 -72.3 Dark Up 48.2 154.3 Up 07:28:14 - 07:49:06 7017
Quincy 07:38:40 -72.5 Dark Up 48.3 154.2 Up 07:28:14 - 07:49:06 7000
Portola 07:38:40 -72.7 Dark Up 48.6 154.8 Up 07:28:14 - 07:49:06 6990
Reno 07:38:38 -73.1 Dark Up 49.1 155.6 Up 07:28:12 - 07:49:04 6969
Carson City 07:38:38 -73.5 Dark Up 49.4 155.4 Up 07:28:12 - 07:49:04 6937
Yerington 07:38:36 -73.8 Dark Up 49.8 156.3 Up 07:28:10 - 07:49:02 6922
Gardnerville 07:38:38 -73.7 Dark Up 49.6 155.4 Up 07:28:12 - 07:49:04 6916
Hawthorne 07:38:34 -74.4 Dark Up 50.4 156.8 Up 07:28:08 - 07:49:00 6882
Tonopah 07:38:29 -75.1 Dark Up 51.2 158.7 Up 07:28:03 - 07:48:55 6845
Lee Vining 07:38:36 -74.8 Dark Up 50.7 155.8 Up 07:28:10 - 07:49:02 6830
Bishop 07:38:34 -75.5 Dark Up 51.5 156.6 Up 07:28:08 - 07:49:00 6779
Beatty 07:38:28 -76.3 Dark Up 52.4 158.9 Up 07:28:02 - 07:48:54 6742
Indian Springs 07:38:24 -76.7 Dark Up 53.0 160.4 Up 07:27:58 - 07:48:50 6716
Lone Pine 07:38:33 -76.4 Dark Up 52.3 156.7 Up 07:28:07 - 07:48:59 6711
Henderson 07:38:21 -77.3 Dark Up 53.7 161.3 Up 07:27:55 - 07:48:47 6669
Searchlight/Boulder City 07:38:21 -77.8 Dark Up 54.3 161.1 Up 07:27:55 - 07:48:47 6617
Patrick 07:38:17 -77.9 Dark Up 54.6 162.8 Up 07:27:51 - 07:48:43 6615
Kingman/Dolan Springs 07:38:18 -78.1 Dark Up 54.7 162.4 Up 07:27:52 - 07:48:44 6594
Laughlin/Bullhead City 07:38:20 -78.2 Dark Up 54.6 161.6 Up 07:27:54 - 07:48:46 6590
DCO 07:38:15 -78.2 Dark Up 55.0 163.9 Up 07:27:49 - 07:48:41 6589
CPSLO 07:38:40 -76.9 Dark Up 52.6 152.0 Up 07:28:14 - 07:49:06 6585
Mohave Valley 07:38:20 -78.4 Dark Up 54.9 161.4 Up 07:27:54 - 07:48:46 6565
Lake Havasu City 07:38:19 -78.8 Dark Up 55.3 161.7 Up 07:27:53 - 07:48:45 6529
Parker 07:38:19 -79.2 Dark Up 55.7 161.6 Up 07:27:53 - 07:48:45 6496
Wildwood 07:38:36 -78.6 Dark Up 54.4 154.5 Up 07:28:10 - 07:49:02 6478
Idyllwild 07:38:29 -79.4 Dark Up 55.4 157.3 Up 07:28:03 - 07:48:55 6450
Blythe 07:38:21 -79.7 Dark Up 56.1 160.8 Up 07:27:55 - 07:48:47 6446
Calipatria 07:38:25 -80.1 Dark Up 56.3 159.0 Up 07:27:59 - 07:48:51 6396
Yuma 07:38:21 -80.6 Dark Up 57.0 160.3 Up 07:27:55 - 07:48:47 6358

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 14YY49, (2018/12/27 07:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.53  71
Alhena         06:37:42.8 +16:23:57  1.9 16.65  60
21 Mon         07:11:23.6 -00:18:08  5.5  2.14  54
PPM 151883     07:04:54.9 +01:05:38  8.5  0.13  56
14YY49         07:05:15.0 +01:11:31 16.3        56
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:09:08 UT

Marc W. Buie, Southwest Research Institute

RECON