RECON: TNO occultation with 504555

Event between (504555) 08SO266 and star GA0860:00211619 with event index number of 228456

Geocentric closest approach at 2019/11/28 04:29:40 UTC

J2000 position of star is 02:37:36.9 -02:04:24
Equinox of date position of star is 02:38:33.0 -01:59:39
Stellar brightness G=13.2, use SENSEUP=32
Star is 129 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 33.9 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 21.2 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 238 seconds.
The 1-sigma cross-track error in the shadow position is 1437 km.
The sky-plane scale is 23969.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 16.3 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 504555, (2019/11/28 04:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.9 +16:32:52  0.8 34.61 164
68Omi Cet      02:20:21.2 -02:53:17  2.0  4.65 125
81 Cet         02:38:42.1 -03:18:40  5.6  1.32 129
PPM 184872     02:40:20.3 -01:59:17  8.2  0.43 130
PPM 184825     02:37:55.8 -01:59:23  9.6  0.17 129
504555         02:38:37.5 -01:59:16 13.2       129
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 3.8 sigma about the mid-time.
The median site spacing is 18.1 km RECON observability=1.0 and success probability=25.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 04:30:23 -42.3 Dark Down 34.2 149.8 Up 04:15:23 - 04:45:23 402
Oroville 04:30:24 -42.6 Dark Down 34.8 149.8 Up 04:15:24 - 04:45:24 363
Tonasket 04:30:24 -42.7 Dark Down 35.0 149.7 Up 04:15:24 - 04:45:24 348
Okanogan 04:30:25 -42.7 Dark Down 35.2 149.4 Up 04:15:25 - 04:45:25 328
Brewster 04:30:26 -42.6 Dark Down 35.4 149.1 Up 04:15:26 - 04:45:26 312
Manson/Chelan 04:30:28 -42.5 Dark Down 35.4 148.6 Up 04:15:28 - 04:45:28 302
Entiat 04:30:28 -42.5 Dark Down 35.6 148.4 Up 04:15:28 - 04:45:28 289
Wenatchee 04:30:29 -42.5 Dark Down 35.8 148.2 Up 04:15:29 - 04:45:29 273
Ellensburg 04:30:31 -42.4 Dark Down 36.1 147.8 Up 04:15:31 - 04:45:31 248
Yakima 04:30:32 -42.5 Dark Down 36.4 147.6 Up 04:15:32 - 04:45:32 221
Toppenish/White Swan 04:30:32 -42.7 Dark Down 36.6 147.7 Up 04:15:32 - 04:45:32 204
Pasco 04:30:28 -43.6 Dark Down 37.2 149.2 Up 04:15:28 - 04:45:28 183
Goldendale 04:30:35 -42.6 Dark Down 37.0 147.0 Up 04:15:35 - 04:45:35 171
PNWRO 04:30:28 -43.8 Dark Down 37.5 149.3 Up 04:15:28 - 04:45:28 164
George/Umatilla 04:30:30 -43.5 Dark Down 37.4 148.8 Up 04:15:30 - 04:45:30 163
The Dalles 04:30:36 -42.4 Dark Down 37.0 146.5 Up 04:15:36 - 04:45:36 160
Maupin 04:30:37 -42.5 Dark Down 37.4 146.5 Up 04:15:37 - 04:45:37 130
Madras/Culver 04:30:38 -42.6 Dark Down 37.8 146.2 Up 04:15:38 - 04:45:38 92
Sisters 04:30:40 -42.4 Dark Down 37.9 145.5 Up 04:15:40 - 04:45:40 74
Redmond 04:30:39 -42.7 Dark Down 38.1 146.0 Up 04:15:39 - 04:45:39 68
Bend 04:30:40 -42.6 Dark Down 38.2 145.7 Up 04:15:40 - 04:45:40 54
Oregon Observatory 04:30:41 -42.6 Dark Down 38.3 145.5 Up 04:15:41 - 04:45:41 43
La Pine/Gilchrist 04:30:42 -42.6 Dark Down 38.5 145.4 Up 04:15:42 - 04:45:42 30
North Lake 04:30:40 -43.1 Dark Down 39.1 145.9 Up 04:15:40 - 04:45:40 -8
Chiloquin 04:30:45 -42.5 Dark Down 39.2 144.4 Up 04:15:45 - 04:45:45 -47
Paisley 04:30:40 -43.5 Dark Down 39.7 146.0 Up 04:15:40 - 04:45:40 -52
Klamath Falls 04:30:46 -42.7 Dark Down 39.6 144.4 Up 04:15:46 - 04:45:46 -73
Lakeview 04:30:41 -43.7 Dark Down 40.2 146.0 Up 04:15:41 - 04:45:41 -91
Tulelake 04:30:45 -42.9 Dark Down 39.9 144.6 Up 04:15:45 - 04:45:45 -96
Cedarville 04:30:42 -44.0 Dark Down 40.8 145.9 Up 04:15:42 - 04:45:42 -142
Fall River/Burney 04:30:47 -43.1 Dark Down 40.7 144.3 Up 04:15:47 - 04:45:47 -165
Susanville 04:30:46 -43.8 Dark Down 41.5 144.8 Up 04:15:46 - 04:45:46 -220
Greenville 04:30:47 -43.6 Dark Down 41.6 144.3 Up 04:15:47 - 04:45:47 -238
Gimple 04:30:47 -43.7 Dark Down 41.7 144.4 Up 04:15:47 - 04:45:47 -239
Quincy 04:30:47 -43.7 Dark Down 41.8 144.2 Up 04:15:47 - 04:45:47 -254
Portola 04:30:46 -44.0 Dark Down 42.1 144.7 Up 04:15:46 - 04:45:46 -269
Reno 04:30:44 -44.6 Dark Down 42.6 145.4 Up 04:15:44 - 04:45:44 -297
Carson City 04:30:45 -44.6 Dark Down 42.9 145.2 Up 04:15:45 - 04:45:45 -325
Gardnerville 04:30:45 -44.7 Dark Down 43.1 145.1 Up 04:15:45 - 04:45:45 -344
Yerington 04:30:43 -45.1 Dark Down 43.3 145.9 Up 04:15:43 - 04:45:43 -347
Hawthorne 04:30:42 -45.6 Dark Down 44.0 146.3 Up 04:15:42 - 04:45:42 -390
Lee Vining 04:30:45 -45.3 Dark Down 44.2 145.4 Up 04:15:45 - 04:45:45 -429
Niwot 04:29:49 -55.1 Dark Down 46.8 164.8 Up 04:14:49 - 04:44:49 -435
Tonopah 04:30:38 -46.8 Dark Down 44.9 147.8 Up 04:15:38 - 04:45:38 -444
Bishop 04:30:43 -46.0 Dark Down 45.0 146.0 Up 04:15:43 - 04:45:43 -486
Beatty 04:30:38 -47.3 Dark Down 46.1 147.8 Up 04:15:38 - 04:45:38 -543
Lone Pine 04:30:43 -46.3 Dark Down 45.8 146.0 Up 04:15:43 - 04:45:43 -551
Indian Springs 04:30:35 -48.2 Dark Down 46.8 149.0 Up 04:15:35 - 04:45:35 -583
CPSLO 04:30:56 -44.4 Dark Down 45.6 142.0 Up 04:15:56 - 04:45:56 -626
Henderson 04:30:33 -48.8 Dark Down 47.6 149.6 Up 04:15:33 - 04:45:33 -636
Searchlight/Boulder City 04:30:33 -49.0 Dark Down 48.1 149.4 Up 04:15:33 - 04:45:33 -685
Patrick 04:30:29 -49.8 Dark Down 48.6 150.8 Up 04:15:29 - 04:45:29 -703
Laughlin/Bullhead City 04:30:32 -49.3 Dark Down 48.5 149.7 Up 04:15:32 - 04:45:32 -714
Kingman/Dolan Springs 04:30:31 -49.7 Dark Down 48.7 150.4 Up 04:15:31 - 04:45:31 -719
Mohave Valley 04:30:33 -49.3 Dark Down 48.7 149.5 Up 04:15:33 - 04:45:33 -737
DCO 04:30:27 -50.4 Dark Down 49.1 151.6 Up 04:15:27 - 04:45:27 -738
Wildwood 04:30:50 -46.2 Dark Down 47.6 143.8 Up 04:15:50 - 04:45:50 -753
Lake Havasu City 04:30:33 -49.6 Dark Down 49.2 149.7 Up 04:15:33 - 04:45:33 -774
Parker 04:30:33 -49.7 Dark Down 49.5 149.5 Up 04:15:33 - 04:45:33 -804
Idyllwild 04:30:43 -47.7 Dark Down 48.8 146.0 Up 04:15:43 - 04:45:43 -807
Blythe 04:30:35 -49.5 Dark Down 49.8 148.8 Up 04:15:35 - 04:45:35 -845
Calipatria 04:30:40 -48.8 Dark Down 49.8 147.2 Up 04:15:40 - 04:45:40 -875
Yuma 04:30:37 -49.5 Dark Down 50.6 148.1 Up 04:15:37 - 04:45:37 -924

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 504555, (2019/11/28 04:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 34.61 164
68Omi Cet      02:19:20.8 -02:58:44  2.0  4.65 125
81 Cet         02:37:41.9 -03:23:48  5.6  1.32 129
PPM 184872     02:39:19.6 -02:04:23  8.2  0.43 130
PPM 184825     02:36:55.2 -02:04:31  9.6  0.17 129
504555         02:37:36.9 -02:04:24 13.2       129
Positions are for J2000

Event circumstances last updated at 2018/06/05 18:21:29 UT

Marc W. Buie, Southwest Research Institute

RECON