RECON: TNO occultation with 79360

Event between (79360) Sila-Nunam and star UC4-522-048441 with event index number of 50373

Geocentric closest approach at 2017/01/02 07:59:47 UTC

J2000 position of star is 09:28:36.3 +14:16:59
Equinox of date position of star is 09:29:31.1 +14:12:34
Stellar brightness R=14.3
Star is 171 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 43.5 AU from the Sun and 42.7 AU from the Earth.
The TNO is moving 19.3 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 160 seconds.
The 1-sigma cross-track error in the shadow position is 2070 km.
The sky-plane scale is 30960.0 km/arcsec.

The TNO has an absolute magnitude Hv=5.2
Diameter=549.6 km assuming a 5% albedo -- 27.2 sec chord
Diameter=224.4 km assuming a 30% albedo -- 11.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 79360, (2017/01/02 08:00UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:16.6 +11:53:01  1.3  9.95 179
PPM 126361     09:22:11.6 +15:17:54  6.4  2.08 169
PPM 126463     09:27:52.6 +14:13:42  7.6  0.40 171
PPM 126475     09:28:37.7 +14:18:13 11.1  0.24 171
79360          09:29:32.1 +14:12:29 14.3       171
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 25.0 km RECON observability=1.0 and success probability=21.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:02:54 -63.9 Dark Down 43.1 124.0 Up 07:49:04 - 08:16:45 1283
Tonasket 08:02:55 -64.2 Dark Down 43.2 123.8 Up 07:49:04 - 08:16:45 1261
Okanogan 08:02:56 -64.5 Dark Down 43.3 123.4 Up 07:49:05 - 08:16:46 1226
Brewster 08:02:57 -64.8 Dark Down 43.3 122.9 Up 07:49:06 - 08:16:47 1198
Manson/Chelan 08:02:58 -65.0 Dark Down 43.2 122.4 Up 07:49:07 - 08:16:48 1175
Entiat 08:02:58 -65.2 Dark Down 43.3 122.1 Up 07:49:08 - 08:16:49 1153
Wenatchee 08:02:59 -65.5 Dark Down 43.4 121.8 Up 07:49:08 - 08:16:49 1127
Ellensburg 08:03:00 -65.9 Dark Down 43.5 121.2 Up 07:49:10 - 08:16:51 1084
Yakima 08:03:01 -66.3 Dark Down 43.7 120.9 Up 07:49:10 - 08:16:51 1043
Toppenish/White Swan 08:03:01 -66.5 Dark Down 43.9 120.9 Up 07:49:10 - 08:16:51 1022
Pasco 08:02:56 -66.6 Dark Down 44.7 122.1 Up 07:49:06 - 08:16:47 1018
PNWRO 08:02:56 -66.9 Dark Down 45.0 122.2 Up 07:49:06 - 08:16:47 995
George/Umatilla 08:02:57 -67.0 Dark Down 44.8 121.6 Up 07:49:07 - 08:16:48 983
Goldendale 08:03:02 -67.0 Dark Down 43.9 120.0 Up 07:49:12 - 08:16:53 964
The Dalles 08:03:04 -67.3 Dark Down 43.8 119.4 Up 07:49:13 - 08:16:54 939
Maupin 08:03:04 -67.7 Dark Down 44.1 119.2 Up 07:49:14 - 08:16:55 897
Madras/Culver 08:03:05 -68.2 Dark Down 44.3 118.7 Up 07:49:14 - 08:16:55 841
Sisters 08:03:07 -68.5 Dark Down 44.2 117.9 Up 07:49:16 - 08:16:57 805
Redmond 08:03:05 -68.6 Dark Down 44.5 118.3 Up 07:49:15 - 08:16:56 805
Bend 08:03:06 -68.8 Dark Down 44.5 118.0 Up 07:49:15 - 08:16:56 782
Oregon Observatory 08:03:07 -69.0 Dark Down 44.5 117.7 Up 07:49:16 - 08:16:57 763
La Pine/Gilchrist 08:03:07 -69.2 Dark Down 44.6 117.5 Up 07:49:17 - 08:16:58 742
North Lake 08:03:05 -69.6 Dark Down 45.1 117.7 Up 07:49:14 - 08:16:55 701
Paisley 08:03:05 -70.2 Dark Down 45.6 117.6 Up 07:49:14 - 08:16:55 646
Chiloquin 08:03:09 -70.2 Dark Down 44.8 116.1 Up 07:49:19 - 08:17:00 625
Lakeview 08:03:05 -70.7 Dark Down 46.0 117.3 Up 07:49:14 - 08:16:55 595
Klamath Falls 08:03:09 -70.6 Dark Down 45.0 115.9 Up 07:49:19 - 08:17:00 590
Tulelake 08:03:08 -70.9 Dark Down 45.3 116.0 Up 07:49:18 - 08:16:59 564
Niwot 08:02:10 -68.9 Dark Down 56.4 133.2 Up 07:48:20 - 08:16:01 540
Cedarville 08:03:05 -71.4 Dark Down 46.4 116.9 Up 07:49:14 - 08:16:55 528
Fall River/Burney 08:03:09 -71.8 Dark Down 45.8 115.2 Up 07:49:19 - 08:17:00 469
Susanville 08:03:07 -72.5 Dark Down 46.6 115.4 Up 07:49:17 - 08:16:58 408
Greenville 08:03:08 -72.7 Dark Down 46.5 114.8 Up 07:49:18 - 08:16:59 377
Quincy 08:03:08 -72.9 Dark Down 46.6 114.6 Up 07:49:18 - 08:16:59 356
Portola 08:03:07 -73.1 Dark Down 47.0 115.0 Up 07:49:17 - 08:16:58 346
Reno 08:03:05 -73.3 Dark Down 47.5 115.3 Up 07:49:14 - 08:16:55 322
Carson City 08:03:05 -73.7 Dark Down 47.7 115.0 Up 07:49:14 - 08:16:55 285
Yerington 08:03:03 -73.9 Dark Down 48.2 115.4 Up 07:49:13 - 08:16:54 269
Gardnerville 08:03:05 -73.9 Dark Down 47.8 114.8 Up 07:49:14 - 08:16:55 259
Hawthorne 08:03:01 -74.3 Dark Down 48.8 115.5 Up 07:49:11 - 08:16:52 224
Tonopah 08:02:57 -74.7 Dark Down 50.0 116.4 Up 07:49:06 - 08:16:47 186
Lee Vining 08:03:04 -74.9 Dark Down 48.7 114.4 Up 07:49:13 - 08:16:54 160
Bishop 08:03:01 -75.5 Dark Down 49.4 114.5 Up 07:49:10 - 08:16:51 102
Beatty 08:02:55 -75.8 Dark Down 50.8 115.6 Up 07:49:05 - 08:16:46 67
Indian Springs 08:02:51 -75.9 Dark Down 51.7 116.4 Up 07:49:01 - 08:16:42 42
Lone Pine 08:03:00 -76.2 Dark Down 50.0 114.0 Up 07:49:10 - 08:16:51 24
Henderson 08:02:49 -76.2 Dark Down 52.4 116.5 Up 07:48:58 - 08:16:39 -9
Patrick 08:02:45 -76.5 Dark Down 53.5 116.9 Up 07:48:54 - 08:16:35 -63
Searchlight/Boulder City 08:02:49 -76.8 Dark Down 52.7 115.9 Up 07:48:58 - 08:16:39 -69
DCO 08:02:42 -76.5 Dark Down 54.2 117.3 Up 07:48:52 - 08:16:33 -88
Kingman/Dolan Springs 08:02:45 -76.8 Dark Down 53.5 116.4 Up 07:48:55 - 08:16:36 -89
Laughlin/Bullhead City 08:02:47 -76.9 Dark Down 53.1 115.9 Up 07:48:57 - 08:16:38 -97
Mohave Valley 08:02:47 -77.2 Dark Down 53.2 115.5 Up 07:48:57 - 08:16:38 -126
CPSLO 08:03:11 -77.6 Dark Down 48.6 110.2 Up 07:49:20 - 08:17:01 -136
Lake Havasu City 08:02:46 -77.5 Dark Down 53.6 115.3 Up 07:48:56 - 08:16:37 -167
Parker 08:02:46 -77.8 Dark Down 53.8 114.9 Up 07:48:56 - 08:16:37 -204
Wildwood 08:03:04 -78.7 Dark Down 50.5 110.7 Up 07:49:13 - 08:16:54 -250
Blythe 08:02:48 -78.4 Dark Down 53.8 113.9 Up 07:48:57 - 08:16:38 -264
Idyllwild 08:02:56 -78.8 Dark Down 52.1 112.0 Up 07:49:06 - 08:16:47 -272
Calipatria 08:02:52 -79.1 Dark Down 53.2 112.4 Up 07:49:01 - 08:16:42 -326
Yuma 08:02:48 -79.2 Dark Down 54.1 112.7 Up 07:48:57 - 08:16:38 -364

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 79360, (2017/01/02 08:00UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  9.95 179
PPM 126361     09:21:15.3 +15:22:17  6.4  2.08 169
PPM 126463     09:26:56.7 +14:18:10  7.6  0.40 171
PPM 126475     09:27:41.9 +14:22:42 11.1  0.24 171
79360          09:28:36.3 +14:16:59 14.3       171
Positions are for J2000

Event circumstances last updated at 2016/09/14 16:04:36 UT

Marc W. Buie, Southwest Research Institute

RECON