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 07:37:30 UTC

J2000 position of star is 07:05:15.0 +01:11:31
Equinox of date position of star is 07:06:08.9 +01:09:52
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 78 seconds.
The 1-sigma cross-track error in the shadow position is 650 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 07:38:28 -64.1 Dark Up 40.5 159.6 Up 07:31:30 - 07:45:26 7739
Tonasket 07:38:28 -64.3 Dark Up 40.7 159.5 Up 07:31:30 - 07:45:26 7721
Okanogan 07:38:29 -64.6 Dark Up 41.0 159.2 Up 07:31:31 - 07:45:27 7695
Brewster 07:38:30 -64.9 Dark Up 41.2 158.9 Up 07:31:32 - 07:45:28 7674
Manson/Chelan 07:38:31 -65.0 Dark Up 41.3 158.4 Up 07:31:33 - 07:45:29 7657
Entiat 07:38:32 -65.2 Dark Up 41.5 158.2 Up 07:31:34 - 07:45:30 7640
Wenatchee 07:38:32 -65.5 Dark Up 41.7 158.0 Up 07:31:34 - 07:45:30 7620
Ellensburg 07:38:33 -65.8 Dark Up 42.0 157.6 Up 07:31:35 - 07:45:31 7587
Yakima 07:38:34 -66.2 Dark Up 42.4 157.4 Up 07:31:36 - 07:45:32 7555
Toppenish/White Swan 07:38:33 -66.4 Dark Up 42.6 157.6 Up 07:31:35 - 07:45:31 7538
Pasco 07:38:29 -66.8 Dark Up 43.0 159.2 Up 07:31:31 - 07:45:27 7532
PNWRO 07:38:28 -67.0 Dark Up 43.3 159.4 Up 07:31:30 - 07:45:26 7513
George/Umatilla 07:38:30 -67.1 Dark Up 43.3 158.8 Up 07:31:32 - 07:45:28 7505
Goldendale 07:38:35 -66.9 Dark Up 43.0 156.8 Up 07:31:37 - 07:45:33 7493
The Dalles 07:38:36 -67.1 Dark Up 43.1 156.2 Up 07:31:38 - 07:45:34 7474
Maupin 07:38:36 -67.5 Dark Up 43.5 156.2 Up 07:31:38 - 07:45:34 7441
Madras/Culver 07:38:37 -68.0 Dark Up 44.0 156.0 Up 07:31:39 - 07:45:35 7397
Sisters 07:38:39 -68.2 Dark Up 44.2 155.2 Up 07:31:41 - 07:45:37 7368
Redmond 07:38:38 -68.3 Dark Up 44.3 155.8 Up 07:31:40 - 07:45:36 7367
Bend 07:38:39 -68.5 Dark Up 44.5 155.5 Up 07:31:41 - 07:45:37 7350
Oregon Observatory 07:38:39 -68.6 Dark Up 44.6 155.2 Up 07:31:41 - 07:45:37 7335
La Pine/Gilchrist 07:38:39 -68.8 Dark Up 44.8 155.1 Up 07:31:41 - 07:45:37 7318
North Lake 07:38:38 -69.4 Dark Up 45.3 155.7 Up 07:31:40 - 07:45:36 7284
Paisley 07:38:37 -70.0 Dark Up 46.0 156.0 Up 07:31:39 - 07:45:35 7238
Chiloquin 07:38:40 -69.8 Dark Up 45.7 154.1 Up 07:31:42 - 07:45:38 7224
Lakeview 07:38:36 -70.5 Dark Up 46.5 156.0 Up 07:31:38 - 07:45:34 7196
Klamath Falls 07:38:40 -70.1 Dark Up 46.0 154.1 Up 07:31:42 - 07:45:38 7196
Tulelake 07:38:40 -70.5 Dark Up 46.3 154.4 Up 07:31:42 - 07:45:38 7174
Cedarville 07:38:36 -71.2 Dark Up 47.1 156.0 Up 07:31:38 - 07:45:34 7141
Fall River/Burney 07:38:40 -71.3 Dark Up 47.2 154.1 Up 07:31:42 - 07:45:38 7096
Niwot 07:37:42 -71.6 Dark Up 51.1 177.9 Up 07:30:44 - 07:44:40 7066
Susanville 07:38:39 -72.1 Dark Up 48.0 154.8 Up 07:31:41 - 07:45:37 7044
Gimple 07:38:40 -72.3 Dark Up 48.2 154.4 Up 07:31:42 - 07:45:38 7019
Greenville 07:38:40 -72.3 Dark Up 48.2 154.3 Up 07:31:42 - 07:45:38 7019
Quincy 07:38:40 -72.5 Dark Up 48.3 154.2 Up 07:31:42 - 07:45:38 7001
Portola 07:38:39 -72.7 Dark Up 48.6 154.8 Up 07:31:41 - 07:45:37 6992
Reno 07:38:36 -73.1 Dark Up 49.1 155.6 Up 07:31:38 - 07:45:34 6970
Carson City 07:38:37 -73.5 Dark Up 49.4 155.4 Up 07:31:39 - 07:45:35 6939
Yerington 07:38:35 -73.8 Dark Up 49.8 156.2 Up 07:31:37 - 07:45:33 6923
Gardnerville 07:38:37 -73.7 Dark Up 49.6 155.4 Up 07:31:39 - 07:45:35 6917
Hawthorne 07:38:33 -74.4 Dark Up 50.4 156.8 Up 07:31:35 - 07:45:31 6884
Tonopah 07:38:28 -75.1 Dark Up 51.2 158.7 Up 07:31:30 - 07:45:26 6847
Lee Vining 07:38:35 -74.8 Dark Up 50.7 155.8 Up 07:31:37 - 07:45:33 6832
Bishop 07:38:32 -75.5 Dark Up 51.5 156.6 Up 07:31:34 - 07:45:30 6780
Beatty 07:38:27 -76.3 Dark Up 52.4 158.9 Up 07:31:29 - 07:45:25 6743
Indian Springs 07:38:23 -76.7 Dark Up 53.0 160.4 Up 07:31:25 - 07:45:21 6717
Lone Pine 07:38:32 -76.4 Dark Up 52.3 156.7 Up 07:31:34 - 07:45:30 6712
Henderson 07:38:20 -77.3 Dark Up 53.7 161.3 Up 07:31:22 - 07:45:18 6670
Searchlight/Boulder City 07:38:20 -77.8 Dark Up 54.3 161.1 Up 07:31:22 - 07:45:18 6618
Patrick 07:38:16 -77.9 Dark Up 54.6 162.8 Up 07:31:18 - 07:45:14 6617
Kingman/Dolan Springs 07:38:17 -78.1 Dark Up 54.7 162.4 Up 07:31:19 - 07:45:15 6596
Laughlin/Bullhead City 07:38:19 -78.2 Dark Up 54.6 161.5 Up 07:31:21 - 07:45:17 6591
DCO 07:38:14 -78.2 Dark Up 55.0 163.9 Up 07:31:16 - 07:45:12 6591
CPSLO 07:38:40 -76.9 Dark Up 52.6 152.0 Up 07:31:42 - 07:45:38 6585
Mohave Valley 07:38:19 -78.4 Dark Up 54.9 161.4 Up 07:31:21 - 07:45:17 6566
Lake Havasu City 07:38:18 -78.8 Dark Up 55.3 161.7 Up 07:31:20 - 07:45:16 6530
Parker 07:38:18 -79.2 Dark Up 55.7 161.6 Up 07:31:20 - 07:45:16 6497
Wildwood 07:38:35 -78.6 Dark Up 54.4 154.5 Up 07:31:37 - 07:45:33 6479
Idyllwild 07:38:28 -79.4 Dark Up 55.4 157.3 Up 07:31:30 - 07:45:26 6452
Blythe 07:38:19 -79.7 Dark Up 56.1 160.8 Up 07:31:21 - 07:45:17 6447
Calipatria 07:38:23 -80.1 Dark Up 56.3 159.0 Up 07:31:25 - 07:45:21 6397
Yuma 07:38:20 -80.6 Dark Up 57.0 160.3 Up 07:31:22 - 07:45:18 6359

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 2017/05/20 18:07:35 UT

Marc W. Buie, Southwest Research Institute

RECON