RECON: TNO occultation with 505679

Event between (505679) 14WT69 and star GA1120:00383547 with event index number of 322652

Geocentric closest approach at 2019/12/28 05:04:28 UTC

J2000 position of star is 03:15:50.8 +23:53:33
Equinox of date position of star is 03:16:58.1 +23:57:43
Stellar brightness G=15.4, use SENSEUP=128
Star is 113 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 46.5 AU from the Sun and 45.8 AU from the Earth.
The TNO is moving 18.0 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 286 seconds.
The 1-sigma cross-track error in the shadow position is 2366 km.
The sky-plane scale is 33188.7 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 24.2 sec chord
Diameter=178.2 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 505679, (2019/12/28 05:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.2 +16:32:53  0.8 20.16 129
44Zet Per      03:55:23.6 +31:56:29  2.8 11.63 123
64 Ari         03:25:29.6 +24:47:36  5.5  2.10 115
PPM 092371     03:19:30.5 +24:09:13  8.1  0.60 114
PPM 092326     03:16:47.2 +23:41:12  9.7  0.28 113
PPM 092344     03:17:47.7 +23:50:10 10.6  0.22 113
505679         03:17:01.3 +23:57:55 15.4       113
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 3.2 sigma about the mid-time.
The median site spacing is 21.6 km RECON observability=1.0 and success probability=19.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 05:03:13 -46.6 Dark Down 63.9 187.2 Up 04:48:13 - 05:18:13 -790
Kelowna 05:03:11 -46.8 Dark Down 63.8 188.0 Up 04:48:11 - 05:18:11 -796
Penticton 05:03:13 -46.8 Dark Down 64.2 187.7 Up 04:48:13 - 05:18:13 -825
Okanagan Falls 05:03:13 -46.9 Dark Down 64.4 187.7 Up 04:48:13 - 05:18:13 -842
Oliver 05:03:13 -46.9 Dark Down 64.5 187.8 Up 04:48:13 - 05:18:13 -858
Anarchist Mountain Observatory 05:03:13 -47.1 Dark Down 64.7 188.3 Up 04:48:13 - 05:18:13 -880
Oroville 05:03:14 -47.1 Dark Down 64.8 188.2 Up 04:48:14 - 05:18:14 -885
Tonasket 05:03:14 -47.2 Dark Down 65.0 188.2 Up 04:48:14 - 05:18:14 -907
Okanogan 05:03:15 -47.2 Dark Down 65.4 188.0 Up 04:48:15 - 05:18:15 -934
Brewster 05:03:16 -47.2 Dark Down 65.6 187.7 Up 04:48:16 - 05:18:16 -954
Manson/Chelan 05:03:18 -47.0 Dark Down 65.9 186.9 Up 04:48:18 - 05:18:18 -964
Entiat 05:03:19 -47.1 Dark Down 66.1 186.8 Up 04:48:19 - 05:18:19 -982
Wenatchee 05:03:20 -47.1 Dark Down 66.4 186.7 Up 04:48:20 - 05:18:20 -1004
Ellensburg 05:03:22 -47.1 Dark Down 66.8 186.3 Up 04:48:22 - 05:18:22 -1036
Yakima 05:03:23 -47.2 Dark Down 67.2 186.4 Up 04:48:23 - 05:18:23 -1075
Toppenish/White Swan 05:03:22 -47.3 Dark Down 67.4 186.9 Up 04:48:22 - 05:18:22 -1100
Goldendale 05:03:25 -47.2 Dark Down 68.0 186.0 Up 04:48:25 - 05:18:25 -1140
Pasco 05:03:18 -48.2 Dark Down 67.4 189.9 Up 04:48:18 - 05:18:18 -1149
The Dalles 05:03:27 -47.0 Dark Down 68.2 185.2 Up 04:48:27 - 05:18:27 -1151
George/Umatilla 05:03:19 -48.2 Dark Down 67.7 189.5 Up 04:48:19 - 05:18:19 -1175
PNWRO 05:03:17 -48.4 Dark Down 67.6 190.5 Up 04:48:17 - 05:18:17 -1180
Maupin 05:03:27 -47.2 Dark Down 68.6 185.5 Up 04:48:27 - 05:18:27 -1194
Madras/Culver 05:03:29 -47.3 Dark Down 69.2 185.6 Up 04:48:29 - 05:18:29 -1245
Sisters 05:03:31 -47.1 Dark Down 69.5 184.5 Up 04:48:31 - 05:18:31 -1263
Redmond 05:03:30 -47.4 Dark Down 69.5 185.6 Up 04:48:30 - 05:18:30 -1278
Bend 05:03:31 -47.4 Dark Down 69.8 185.3 Up 04:48:31 - 05:18:31 -1294
Oregon Observatory 05:03:32 -47.3 Dark Down 69.9 185.0 Up 04:48:32 - 05:18:32 -1307
La Pine/Gilchrist 05:03:33 -47.3 Dark Down 70.2 184.9 Up 04:48:33 - 05:18:33 -1325
North Lake 05:03:31 -47.8 Dark Down 70.5 186.6 Up 04:48:31 - 05:18:31 -1386
Chiloquin 05:03:37 -47.3 Dark Down 71.3 184.2 Up 04:48:37 - 05:18:37 -1421
Paisley 05:03:30 -48.2 Dark Down 71.1 187.8 Up 04:48:30 - 05:18:30 -1451
Klamath Falls 05:03:37 -47.4 Dark Down 71.6 184.5 Up 04:48:37 - 05:18:37 -1457
Tulelake 05:03:36 -47.7 Dark Down 71.9 185.4 Up 04:48:36 - 05:18:36 -1493
Lakeview 05:03:31 -48.5 Dark Down 71.5 188.6 Up 04:48:31 - 05:18:31 -1507
Cedarville 05:03:31 -48.7 Dark Down 72.2 189.4 Up 04:48:31 - 05:18:31 -1577
Fall River/Burney 05:03:38 -48.0 Dark Down 72.8 186.0 Up 04:48:38 - 05:18:38 -1585
Susanville 05:03:36 -48.6 Dark Down 73.3 188.5 Up 04:48:36 - 05:18:36 -1671
Greenville 05:03:38 -48.5 Dark Down 73.6 187.8 Up 04:48:38 - 05:18:38 -1689
Gimple 05:03:37 -48.5 Dark Down 73.6 188.0 Up 04:48:37 - 05:18:37 -1692
Quincy 05:03:38 -48.5 Dark Down 73.8 187.9 Up 04:48:38 - 05:18:38 -1709
Portola 05:03:36 -48.9 Dark Down 73.9 189.5 Up 04:48:36 - 05:18:36 -1737
Reno 05:03:35 -49.4 Dark Down 74.1 191.7 Up 04:48:35 - 05:18:35 -1785
Carson City 05:03:35 -49.5 Dark Down 74.4 192.1 Up 04:48:35 - 05:18:35 -1821
Gardnerville 05:03:35 -49.6 Dark Down 74.6 192.4 Up 04:48:35 - 05:18:35 -1847
Yerington 05:03:32 -50.0 Dark Down 74.5 194.3 Up 04:48:32 - 05:18:32 -1862
Hawthorne 05:03:31 -50.5 Dark Down 74.8 196.5 Up 04:48:31 - 05:18:31 -1925
Lee Vining 05:03:35 -50.2 Dark Down 75.5 195.5 Up 04:48:35 - 05:18:35 -1966
Tonopah 05:03:26 -51.6 Dark Down 74.9 201.8 Up 04:48:26 - 05:18:26 -2018
Bishop 05:03:32 -50.8 Dark Down 75.9 198.7 Up 04:48:32 - 05:18:32 -2050
Lone Pine 05:03:33 -51.2 Dark Down 76.5 201.0 Up 04:48:33 - 05:18:33 -2138
Niwot 05:02:30 -59.8 Dark Down 67.9 228.2 Up 04:47:30 - 05:17:30 -2139
SwRI 05:02:31 -59.8 Dark Down 68.0 228.2 Up 04:47:31 - 05:17:31 -2148
Beatty 05:03:26 -52.2 Dark Down 75.8 205.1 Up 04:48:26 - 05:18:26 -2150
CPSLO 05:03:47 -49.3 Dark Down 78.3 192.4 Up 04:48:47 - 05:18:47 -2181
Indian Springs 05:03:25 -53.1 Dark Down 75.7 209.4 Up 04:48:25 - 05:18:25 -2219
Henderson 05:03:20 -53.7 Dark Down 75.9 212.7 Up 04:48:20 - 05:18:20 -2294
Searchlight/Boulder City 05:03:25 -53.9 Dark Down 76.4 214.3 Up 04:48:25 - 05:18:25 -2357
Wildwood 05:03:41 -51.1 Dark Down 79.0 203.3 Up 04:48:41 - 05:18:41 -2375
Patrick 05:03:16 -54.7 Dark Down 75.9 217.7 Up 04:48:16 - 05:18:16 -2394
Laughlin/Bullhead City 05:03:19 -54.2 Dark Down 76.4 216.1 Up 04:48:19 - 05:18:19 -2397
Kingman/Dolan Springs 05:03:17 -54.6 Dark Down 76.2 217.7 Up 04:48:17 - 05:18:17 -2411
Mohave Valley 05:03:21 -54.2 Dark Down 76.7 216.8 Up 04:48:21 - 05:18:21 -2425
DCO 05:03:13 -55.3 Dark Down 75.8 220.6 Up 04:48:13 - 05:18:13 -2447
Lake Havasu City 05:03:20 -54.5 Dark Down 76.8 218.6 Up 04:48:20 - 05:18:20 -2475
Idyllwild 05:03:32 -52.6 Dark Down 78.6 212.1 Up 04:48:32 - 05:18:32 -2476
Parker 05:03:25 -54.6 Dark Down 77.1 219.8 Up 04:48:25 - 05:18:25 -2514
Blythe 05:03:25 -54.4 Dark Down 77.7 220.3 Up 04:48:25 - 05:18:25 -2557
Calipatria 05:03:28 -53.7 Dark Down 78.5 218.4 Up 04:48:28 - 05:18:28 -2577
Yuma 05:03:25 -54.5 Dark Down 78.4 223.0 Up 04:48:25 - 05:18:25 -2651

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 505679, (2019/12/28 05:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.16 129
44Zet Per      03:54:07.9 +31:53:01  2.8 11.63 123
64 Ari         03:24:18.5 +24:43:26  5.5  2.10 115
PPM 092371     03:18:19.9 +24:04:54  8.1  0.60 114
PPM 092326     03:15:36.9 +23:36:50  9.7  0.28 113
PPM 092344     03:16:37.3 +23:45:49 10.6  0.22 113
505679         03:15:50.8 +23:53:33 15.4       113
Positions are for J2000

Event circumstances last updated at 2019/01/30 20:48:42 UT

Marc W. Buie, Southwest Research Institute

RECON