RECON: TNO occultation with 14YY49

Event between 14YY49 and star UC4-458-022816 with event index number of 142069

Geocentric closest approach at 2018/01/02 05:09:07 UTC

J2000 position of star is 06:43:52.2 +01:27:43
Equinox of date position of star is 06:44:46.2 +01:26:36
Stellar brightness R=15.5, use SENSEUP=128
Star is 19 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 17.8 AU from the Sun and 16.9 AU from the Earth.
The TNO is moving 22.8 km/sec on the sky relative to the star, or, 6.7 arcsec/hr.
The 1-sigma error in the time of the event is 73 seconds.
The 1-sigma cross-track error in the shadow position is 616 km.
The sky-plane scale is 12221.1 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 -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14YY49, (2018/01/02 05:09UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:08.8 +07:24:32  0.4 13.51  20
Alhena         06:38:45.1 +16:22:57  1.9 15.01   6
PPM 150940     06:39:34.2 +01:35:47  6.2  1.32  19
PPM 151057     06:42:21.6 +00:56:21  7.2  0.79  19
PPM 151161     06:45:33.8 +01:15:34  9.3  0.26  19
14YY49         06:44:48.2 +01:26:34 15.5        19
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 21.3 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 05:11:25 -47.7 Dark Up 31.1 130.3 Up 05:04:48 - 05:18:01 7812
Tonasket 05:11:26 -47.8 Dark Up 31.3 130.2 Up 05:04:49 - 05:18:02 7794
Okanogan 05:11:27 -47.8 Dark Up 31.4 129.9 Up 05:04:51 - 05:18:04 7766
Brewster 05:11:28 -47.8 Dark Up 31.5 129.6 Up 05:04:51 - 05:18:04 7744
Manson/Chelan 05:11:29 -47.6 Dark Up 31.4 129.1 Up 05:04:52 - 05:18:05 7726
Entiat 05:11:30 -47.7 Dark Up 31.5 129.0 Up 05:04:53 - 05:18:06 7708
Wenatchee 05:11:31 -47.7 Dark Up 31.6 128.8 Up 05:04:54 - 05:18:07 7686
Ellensburg 05:11:32 -47.7 Dark Up 31.8 128.3 Up 05:04:55 - 05:18:08 7652
Yakima 05:11:33 -47.8 Dark Up 32.0 128.1 Up 05:04:57 - 05:18:10 7618
Toppenish/White Swan 05:11:33 -48.0 Dark Up 32.3 128.2 Up 05:04:57 - 05:18:10 7601
Pasco 05:11:30 -48.8 Dark Up 33.0 129.4 Up 05:04:53 - 05:18:06 7596
PNWRO 05:11:30 -49.1 Dark Up 33.3 129.5 Up 05:04:53 - 05:18:06 7577
George/Umatilla 05:11:31 -48.8 Dark Up 33.1 129.0 Up 05:04:55 - 05:18:08 7567
Goldendale 05:11:35 -47.9 Dark Up 32.4 127.5 Up 05:04:59 - 05:18:12 7554
The Dalles 05:11:36 -47.7 Dark Up 32.3 127.0 Up 05:05:00 - 05:18:13 7533
Maupin 05:11:37 -47.9 Dark Up 32.6 126.9 Up 05:05:01 - 05:18:14 7499
Madras/Culver 05:11:38 -48.0 Dark Up 32.9 126.6 Up 05:05:02 - 05:18:15 7452
Sisters 05:11:40 -47.8 Dark Up 32.9 126.0 Up 05:05:04 - 05:18:17 7422
Redmond 05:11:39 -48.1 Dark Up 33.1 126.4 Up 05:05:03 - 05:18:16 7422
Bend 05:11:40 -48.1 Dark Up 33.1 126.1 Up 05:05:03 - 05:18:16 7403
Oregon Observatory 05:11:41 -48.0 Dark Up 33.2 125.9 Up 05:05:04 - 05:18:17 7388
La Pine/Gilchrist 05:11:41 -48.0 Dark Up 33.3 125.7 Up 05:05:05 - 05:18:18 7370
North Lake 05:11:40 -48.6 Dark Up 33.9 126.1 Up 05:05:04 - 05:18:17 7335
Paisley 05:11:40 -49.0 Dark Up 34.4 126.1 Up 05:05:04 - 05:18:17 7288
Chiloquin 05:11:45 -48.1 Dark Up 33.7 124.8 Up 05:05:08 - 05:18:21 7272
Lakeview 05:11:41 -49.2 Dark Up 34.8 126.1 Up 05:05:04 - 05:18:17 7245
Klamath Falls 05:11:45 -48.2 Dark Up 33.9 124.7 Up 05:05:08 - 05:18:21 7242
Tulelake 05:11:44 -48.5 Dark Up 34.3 124.8 Up 05:05:08 - 05:18:21 7220
Cedarville 05:11:42 -49.5 Dark Up 35.3 125.9 Up 05:05:05 - 05:18:18 7188
Niwot 05:10:59 -60.5 Dark Up 44.4 141.2 Up 05:04:22 - 05:17:35 7139
Fall River/Burney 05:11:46 -48.7 Dark Up 34.9 124.4 Up 05:05:09 - 05:18:22 7139
Susanville 05:11:45 -49.4 Dark Up 35.7 124.8 Up 05:05:08 - 05:18:21 7086
Gimple 05:11:46 -49.3 Dark Up 35.7 124.4 Up 05:05:10 - 05:18:23 7060
Greenville 05:11:46 -49.3 Dark Up 35.6 124.3 Up 05:05:10 - 05:18:23 7060
Quincy 05:11:46 -49.3 Dark Up 35.8 124.2 Up 05:05:10 - 05:18:23 7041
Portola 05:11:46 -49.7 Dark Up 36.1 124.6 Up 05:05:09 - 05:18:22 7032
Reno 05:11:44 -50.2 Dark Up 36.7 125.0 Up 05:05:07 - 05:18:20 7011
Carson City 05:11:45 -50.3 Dark Up 36.9 124.8 Up 05:05:08 - 05:18:21 6979
Yerington 05:11:43 -50.8 Dark Up 37.4 125.3 Up 05:05:06 - 05:18:19 6964
Gardnerville 05:11:45 -50.4 Dark Up 37.1 124.7 Up 05:05:08 - 05:18:21 6956
Hawthorne 05:11:42 -51.3 Dark Up 38.0 125.5 Up 05:05:06 - 05:18:19 6923
Tonopah 05:11:39 -52.5 Dark Up 39.2 126.6 Up 05:05:02 - 05:18:15 6887
Lee Vining 05:11:45 -51.1 Dark Up 38.0 124.7 Up 05:05:08 - 05:18:21 6870
Bishop 05:11:43 -51.7 Dark Up 38.9 125.0 Up 05:05:07 - 05:18:20 6817
Beatty 05:11:39 -53.1 Dark Up 40.2 126.3 Up 05:05:03 - 05:18:16 6782
Indian Springs 05:11:36 -54.0 Dark Up 41.1 127.2 Up 05:05:00 - 05:18:13 6757
Lone Pine 05:11:43 -52.1 Dark Up 39.5 124.8 Up 05:05:07 - 05:18:20 6748
Henderson 05:11:35 -54.6 Dark Up 41.8 127.5 Up 05:04:58 - 05:18:11 6710
Patrick 05:11:32 -55.6 Dark Up 42.9 128.2 Up 05:04:55 - 05:18:08 6657
Searchlight/Boulder City 05:11:35 -54.8 Dark Up 42.2 127.2 Up 05:04:59 - 05:18:12 6656
Kingman/Dolan Springs 05:11:32 -55.5 Dark Up 42.9 127.8 Up 05:04:56 - 05:18:09 6635
DCO 05:11:30 -56.3 Dark Up 43.6 128.7 Up 05:04:53 - 05:18:06 6632
Laughlin/Bullhead City 05:11:35 -55.1 Dark Up 42.6 127.3 Up 05:04:58 - 05:18:11 6629
CPSLO 05:11:53 -50.2 Dark Up 38.5 121.5 Up 05:05:17 - 05:18:30 6612
Mohave Valley 05:11:35 -55.2 Dark Up 42.8 127.1 Up 05:04:58 - 05:18:11 6604
Lake Havasu City 05:11:35 -55.4 Dark Up 43.2 127.1 Up 05:04:58 - 05:18:11 6567
Parker 05:11:35 -55.5 Dark Up 43.4 126.8 Up 05:04:58 - 05:18:11 6533
Wildwood 05:11:49 -52.0 Dark Up 40.6 122.6 Up 05:05:12 - 05:18:25 6506
Idyllwild 05:11:43 -53.6 Dark Up 42.0 124.1 Up 05:05:07 - 05:18:20 6482
Blythe 05:11:36 -55.4 Dark Up 43.5 126.1 Up 05:05:00 - 05:18:13 6481
Calipatria 05:11:40 -54.7 Dark Up 43.2 124.8 Up 05:05:03 - 05:18:16 6428
Yuma 05:11:38 -55.5 Dark Up 44.1 125.4 Up 05:05:01 - 05:18:14 6391

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, (2018/01/02 05:09UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.51  20
Alhena         06:37:42.8 +16:23:57  1.9 15.01   6
PPM 150940     06:38:38.2 +01:36:48  6.2  1.32  19
PPM 151057     06:41:25.9 +00:57:26  7.2  0.79  19
PPM 151161     06:44:37.9 +01:16:45  9.3  0.26  19
14YY49         06:43:52.2 +01:27:43 15.5        19
Positions are for J2000

Event circumstances last updated at 2017/05/17 17:58:43 UT

Marc W. Buie, Southwest Research Institute

RECON