RECON: TNO occultation with 04VK78

Event between 04VK78 and star GA1120:00757551 with event index number of 222816

Geocentric closest approach at 2019/11/24 10:19:45 UTC

J2000 position of star is 04:43:19.7 +22:23:23
Equinox of date position of star is 04:44:27.4 +22:25:26
Stellar brightness G=14.7, use SENSEUP=128
Star is 140 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 35.4 AU from the Sun and 34.4 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 320 seconds.
The 1-sigma cross-track error in the shadow position is 1783 km.
The sky-plane scale is 24967.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=143.2 km assuming a 5% albedo -- 5.9 sec chord
Diameter=58.5 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 04VK78, (2019/11/24 10:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.9 +16:32:52  0.8  6.13 143
3Iot Aur       04:58:17.5 +33:11:45  2.7 11.19 134
PPM 093742     04:46:54.7 +23:39:47  6.1  1.35 139
PPM 093726     04:45:05.8 +22:58:49  7.0  0.57 140
PPM 093696     04:42:54.3 +22:39:34  9.5  0.44 140
PPM 093716     04:43:55.6 +22:38:30 10.6  0.26 140
04VK78         04:44:31.3 +22:25:33 14.7       140
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 2.8 sigma about the mid-time.
The median site spacing is 24.2 km RECON observability=1.0 and success probability=18.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:18:13 -47.7 Dark Down 55.1 228.1 Up 10:03:13 - 10:33:13 -1437
Summerland 10:18:14 -48.0 Dark Down 55.3 227.6 Up 10:03:14 - 10:33:14 -1443
Penticton 10:18:12 -48.0 Dark Down 55.4 228.2 Up 10:03:12 - 10:33:12 -1474
Okanagan Falls 10:18:12 -48.1 Dark Down 55.5 228.4 Up 10:03:12 - 10:33:12 -1493
Oliver 10:18:12 -48.2 Dark Down 55.6 228.6 Up 10:03:12 - 10:33:12 -1509
Anarchist Mountain Observatory 10:18:12 -48.2 Dark Down 55.7 229.1 Up 10:03:12 - 10:33:12 -1525
Oroville 10:18:12 -48.2 Dark Down 55.8 229.0 Up 10:03:12 - 10:33:12 -1533
Tonasket 10:18:12 -48.4 Dark Down 55.9 229.3 Up 10:03:12 - 10:33:12 -1556
Okanogan 10:18:12 -48.6 Dark Down 56.2 229.5 Up 10:03:12 - 10:33:12 -1591
Brewster 10:18:12 -48.8 Dark Down 56.5 229.5 Up 10:03:12 - 10:33:12 -1619
Manson/Chelan 10:18:13 -49.2 Dark Down 56.8 229.2 Up 10:03:13 - 10:33:13 -1642
Entiat 10:18:12 -49.3 Dark Down 57.0 229.4 Up 10:03:12 - 10:33:12 -1664
Wenatchee 10:18:12 -49.5 Dark Down 57.2 229.6 Up 10:03:12 - 10:33:12 -1690
Ellensburg 10:18:13 -49.8 Dark Down 57.6 229.7 Up 10:03:13 - 10:33:13 -1733
Yakima 10:18:12 -50.0 Dark Down 57.8 230.2 Up 10:03:12 - 10:33:12 -1775
Toppenish/White Swan 10:18:12 -50.0 Dark Down 57.9 230.7 Up 10:03:12 - 10:33:12 -1796
Pasco 10:18:08 -49.3 Dark Down 57.3 232.6 Up 10:03:08 - 10:33:08 -1803
PNWRO 10:18:07 -49.3 Dark Down 57.3 233.2 Up 10:03:07 - 10:33:07 -1827
George/Umatilla 10:18:08 -49.6 Dark Down 57.6 232.7 Up 10:03:08 - 10:33:08 -1838
Goldendale 10:18:12 -50.5 Dark Down 58.5 230.8 Up 10:03:12 - 10:33:12 -1855
The Dalles 10:18:13 -50.9 Dark Down 58.8 230.5 Up 10:03:13 - 10:33:13 -1879
Maupin 10:18:13 -51.0 Dark Down 59.0 231.2 Up 10:03:13 - 10:33:13 -1922
Madras/Culver 10:18:12 -51.3 Dark Down 59.4 231.9 Up 10:03:12 - 10:33:12 -1978
Sisters 10:18:13 -51.7 Dark Down 59.8 231.7 Up 10:03:13 - 10:33:13 -2015
Redmond 10:18:12 -51.5 Dark Down 59.6 232.3 Up 10:03:12 - 10:33:12 -2016
Bend 10:18:12 -51.6 Dark Down 59.8 232.4 Up 10:03:12 - 10:33:12 -2038
Oregon Observatory 10:18:13 -51.8 Dark Down 60.0 232.4 Up 10:03:13 - 10:33:13 -2057
La Pine/Gilchrist 10:18:13 -51.9 Dark Down 60.2 232.6 Up 10:03:13 - 10:33:13 -2078
North Lake 10:18:11 -51.7 Dark Down 60.1 234.1 Up 10:03:11 - 10:33:11 -2121
Paisley 10:18:09 -51.7 Dark Down 60.2 235.4 Up 10:03:09 - 10:33:09 -2177
Chiloquin 10:18:13 -52.6 Dark Down 61.1 233.7 Up 10:03:13 - 10:33:13 -2196
Lakeview 10:18:08 -51.8 Dark Down 60.4 236.4 Up 10:03:08 - 10:33:08 -2230
Klamath Falls 10:18:12 -52.7 Dark Down 61.2 234.3 Up 10:03:12 - 10:33:12 -2232
Tulelake 10:18:11 -52.6 Dark Down 61.2 235.1 Up 10:03:11 - 10:33:11 -2259
Cedarville 10:18:07 -51.9 Dark Down 60.6 237.6 Up 10:03:07 - 10:33:07 -2298
Niwot 10:17:21 -41.4 Dark Down 50.9 255.8 Up 10:02:21 - 10:32:21 -2311
Fall River/Burney 10:18:10 -52.9 Dark Down 61.6 236.6 Up 10:03:10 - 10:33:10 -2354
Susanville 10:18:08 -52.6 Dark Down 61.5 238.6 Up 10:03:08 - 10:33:08 -2418
Gimple 10:18:08 -52.9 Dark Down 61.8 238.8 Up 10:03:08 - 10:33:08 -2448
Greenville 10:18:08 -53.0 Dark Down 61.9 238.7 Up 10:03:08 - 10:33:08 -2448
Quincy 10:18:08 -53.0 Dark Down 62.0 239.0 Up 10:03:08 - 10:33:08 -2470
Portola 10:18:06 -52.7 Dark Down 61.7 239.9 Up 10:03:06 - 10:33:06 -2481
Reno 10:18:04 -52.4 Dark Down 61.4 241.1 Up 10:03:04 - 10:33:04 -2506
Carson City 10:18:04 -52.5 Dark Down 61.6 241.7 Up 10:03:04 - 10:33:04 -2544
Yerington 10:18:02 -52.1 Dark Down 61.2 242.9 Up 10:03:02 - 10:33:02 -2561
Gardnerville 10:18:04 -52.5 Dark Down 61.6 242.2 Up 10:03:04 - 10:33:04 -2570
Hawthorne 10:18:00 -51.8 Dark Down 61.1 244.3 Up 10:03:00 - 10:33:00 -2608
Tonopah 10:17:55 -50.9 Dark Down 60.3 246.7 Up 10:02:55 - 10:32:55 -2649
Lee Vining 10:18:01 -52.3 Dark Down 61.7 244.6 Up 10:03:01 - 10:33:01 -2671
Bishop 10:17:58 -51.9 Dark Down 61.4 246.5 Up 10:02:58 - 10:32:58 -2731
Beatty 10:17:53 -50.8 Dark Down 60.4 249.1 Up 10:02:53 - 10:32:53 -2770
Indian Springs 10:17:49 -50.0 Dark Down 59.7 250.8 Up 10:02:49 - 10:32:49 -2797
Lone Pine 10:17:57 -51.9 Dark Down 61.4 248.2 Up 10:02:57 - 10:32:57 -2811
Henderson 10:17:46 -49.6 Dark Down 59.3 252.3 Up 10:02:46 - 10:32:46 -2849
Patrick 10:17:42 -48.8 Dark Down 58.6 254.4 Up 10:02:42 - 10:32:42 -2907
Searchlight/Boulder City 10:17:46 -49.7 Dark Down 59.4 253.3 Up 10:02:46 - 10:32:46 -2910
Kingman/Dolan Springs 10:17:43 -49.0 Dark Down 58.9 254.6 Up 10:02:43 - 10:32:43 -2933
DCO 10:17:39 -48.3 Dark Down 58.2 255.5 Up 10:02:39 - 10:32:39 -2933
Laughlin/Bullhead City 10:17:44 -49.4 Dark Down 59.3 254.1 Up 10:02:44 - 10:32:44 -2939
CPSLO 10:18:04 -54.2 Dark Down 63.9 247.5 Up 10:03:04 - 10:33:04 -2966
Mohave Valley 10:17:43 -49.5 Dark Down 59.3 254.6 Up 10:02:43 - 10:32:43 -2969
Lake Havasu City 10:17:43 -49.3 Dark Down 59.2 255.5 Up 10:02:43 - 10:32:43 -3010
Parker 10:17:42 -49.4 Dark Down 59.3 256.1 Up 10:02:42 - 10:32:42 -3048
Wildwood 10:17:57 -52.9 Dark Down 62.7 252.0 Up 10:02:57 - 10:32:57 -3086
Blythe 10:17:43 -49.7 Dark Down 59.7 256.7 Up 10:02:43 - 10:32:43 -3107
Idyllwild 10:17:50 -51.4 Dark Down 61.3 254.5 Up 10:02:50 - 10:32:50 -3112
Calipatria 10:17:46 -50.5 Dark Down 60.5 256.7 Up 10:02:46 - 10:32:46 -3169
Yuma 10:17:42 -49.8 Dark Down 59.9 258.2 Up 10:02:42 - 10:32:42 -3208

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 04VK78, (2019/11/24 10:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  6.13 143
3Iot Aur       04:56:59.6 +33:09:58  2.7 11.19 134
PPM 093742     04:45:42.5 +23:37:41  6.1  1.35 139
PPM 093726     04:43:54.0 +22:56:40  7.0  0.57 140
PPM 093696     04:41:42.7 +22:37:22  9.5  0.44 140
PPM 093716     04:42:44.0 +22:36:19 10.6  0.26 140
04VK78         04:43:19.7 +22:23:23 14.7       140
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:34:51 UT

Marc W. Buie, Southwest Research Institute

RECON