RECON: TNO occultation with 84719

Event between (84719) 02VR128 and star UC4-589-008717 with event index number of 166798

Geocentric closest approach at 2018/11/30 07:41:55 UTC

J2000 position of star is 03:33:26.4 +27:45:44
Equinox of date position of star is 03:34:28.1 +27:49:06
Stellar brightness R=15.8
Star is 104 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 39.8 AU from the Sun and 38.9 AU from the Earth.
The TNO is moving 25.2 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 139 seconds.
The 1-sigma cross-track error in the shadow position is 2236 km.
The sky-plane scale is 28179.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.2
Diameter=549.6 km assuming a 5% albedo -- 21.8 sec chord
Diameter=224.4 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 84719, (2018/11/30 07:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.5 +16:32:45  0.8 18.30  93
44Zet Per      03:55:19.5 +31:56:18  2.8  6.09  98
11 Tau         03:41:54.3 +25:23:22  6.1  2.93 103
PPM 092643     03:36:35.2 +27:54:29  8.5  0.45 103
PPM 092586     03:33:05.6 +27:55:17  9.5  0.34 104
84719          03:34:35.3 +27:49:29 15.8       103
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 26.0 km RECON observability=1.0 and success probability=19.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:41:01 -62.7 Dark Up 67.0 207.1 Up 07:28:55 - 07:53:07 2612
Tonasket 07:41:01 -62.9 Dark Up 67.2 207.4 Up 07:28:55 - 07:53:07 2588
Okanogan 07:41:01 -63.3 Dark Up 67.6 207.4 Up 07:28:55 - 07:53:07 2554
Brewster 07:41:02 -63.5 Dark Up 67.9 207.3 Up 07:28:56 - 07:53:08 2528
Manson/Chelan 07:41:03 -63.7 Dark Up 68.2 206.7 Up 07:28:57 - 07:53:09 2510
Entiat 07:41:03 -63.9 Dark Up 68.4 206.8 Up 07:28:57 - 07:53:09 2488
Wenatchee 07:41:04 -64.2 Dark Up 68.6 206.9 Up 07:28:58 - 07:53:10 2462
Ellensburg 07:41:05 -64.6 Dark Up 69.1 206.8 Up 07:28:59 - 07:53:11 2422
Yakima 07:41:05 -65.0 Dark Up 69.4 207.3 Up 07:28:59 - 07:53:11 2379
Toppenish/White Swan 07:41:04 -65.2 Dark Up 69.6 208.0 Up 07:28:58 - 07:53:10 2354
Pasco 07:41:01 -65.4 Dark Up 69.3 211.0 Up 07:28:55 - 07:53:07 2328
Goldendale 07:41:06 -65.7 Dark Down 70.2 207.7 Up 07:29:00 - 07:53:12 2301
PNWRO 07:41:00 -65.6 Dark Up 69.4 211.9 Up 07:28:54 - 07:53:06 2299
George/Umatilla 07:41:01 -65.7 Dark Up 69.6 211.0 Up 07:28:55 - 07:53:07 2295
The Dalles 07:41:07 -65.9 Dark Down 70.5 207.1 Up 07:29:01 - 07:53:13 2281
Maupin 07:41:07 -66.3 Dark Down 70.9 207.9 Up 07:29:01 - 07:53:13 2236
Madras/Culver 07:41:07 -66.9 Dark Down 71.4 208.5 Up 07:29:01 - 07:53:13 2179
Sisters 07:41:09 -67.2 Dark Down 71.8 207.8 Up 07:29:03 - 07:53:15 2149
Redmond 07:41:08 -67.2 Dark Down 71.7 208.9 Up 07:29:02 - 07:53:14 2141
Bend 07:41:08 -67.4 Dark Down 71.9 208.9 Up 07:29:02 - 07:53:14 2120
Oregon Observatory 07:41:09 -67.6 Dark Down 72.1 208.8 Up 07:29:03 - 07:53:15 2103
La Pine/Gilchrist 07:41:09 -67.8 Dark Down 72.3 208.9 Up 07:29:03 - 07:53:15 2082
North Lake 07:41:07 -68.3 Dark Down 72.5 211.2 Up 07:29:01 - 07:53:13 2029
Chiloquin 07:41:11 -68.8 Dark Down 73.4 209.7 Up 07:29:05 - 07:53:17 1968
Paisley 07:41:07 -68.9 Dark Down 72.8 213.1 Up 07:29:01 - 07:53:13 1965
Klamath Falls 07:41:11 -69.2 Dark Down 73.7 210.6 Up 07:29:05 - 07:53:17 1931
Lakeview 07:41:06 -69.4 Dark Down 73.2 214.5 Up 07:29:00 - 07:53:12 1909
Tulelake 07:41:10 -69.5 Dark Down 73.8 211.9 Up 07:29:04 - 07:53:16 1898
Cedarville 07:41:06 -70.0 Dark Down 73.6 216.3 Up 07:29:00 - 07:53:12 1836
Fall River/Burney 07:41:10 -70.4 Dark Down 74.5 213.9 Up 07:29:04 - 07:53:16 1799
Susanville 07:41:08 -71.1 Dark Down 74.7 217.3 Up 07:29:02 - 07:53:14 1722
Greenville 07:41:09 -71.4 Dark Down 75.1 217.1 Up 07:29:03 - 07:53:15 1696
Gimple 07:41:09 -71.4 Dark Down 75.0 217.3 Up 07:29:03 - 07:53:15 1694
Quincy 07:41:09 -71.6 Dark Down 75.2 217.6 Up 07:29:03 - 07:53:15 1674
Portola 07:41:07 -71.7 Dark Down 75.1 219.2 Up 07:29:01 - 07:53:13 1654
Reno 07:41:05 -72.0 Dark Down 75.0 221.7 Up 07:28:59 - 07:53:11 1617
Niwot 07:40:19 -68.6 Dark Up 65.5 247.7 Up 07:28:13 - 07:52:25 1582
Carson City 07:41:06 -72.4 Dark Down 75.2 222.7 Up 07:29:00 - 07:53:12 1578
Gardnerville 07:41:06 -72.6 Dark Down 75.4 223.4 Up 07:29:00 - 07:53:12 1551
Yerington 07:41:03 -72.6 Dark Down 75.0 224.9 Up 07:28:57 - 07:53:09 1550
Hawthorne 07:41:02 -73.1 Dark Down 75.1 227.5 Up 07:28:56 - 07:53:08 1493
Lee Vining 07:41:04 -73.7 Dark Down 75.7 227.9 Up 07:28:58 - 07:53:10 1437
Tonopah 07:40:57 -73.6 Dark Up 74.5 232.3 Up 07:28:51 - 07:53:03 1427
Bishop 07:41:02 -74.3 Dark Down 75.7 231.5 Up 07:28:56 - 07:53:08 1364
Beatty 07:40:56 -74.7 Dark Up 74.9 236.8 Up 07:28:50 - 07:53:02 1295
Lone Pine 07:41:01 -75.0 Dark Down 75.9 234.8 Up 07:28:55 - 07:53:07 1277
Indian Springs 07:40:53 -74.9 Dark Up 74.4 240.1 Up 07:28:47 - 07:52:59 1249
Henderson 07:40:52 -75.4 Dark Up 74.1 243.1 Up 07:28:46 - 07:52:58 1184
CPSLO 07:41:11 -76.2 Dark Down 78.4 232.5 Up 07:29:05 - 07:53:17 1167
Searchlight/Boulder City 07:40:51 -75.9 Dark Up 74.3 245.0 Up 07:28:45 - 07:52:57 1120
Patrick 07:40:48 -75.8 Dark Up 73.6 247.0 Up 07:28:42 - 07:52:54 1105
Laughlin/Bullhead City 07:40:50 -76.1 Dark Up 74.2 246.6 Up 07:28:44 - 07:52:56 1084
Kingman/Dolan Springs 07:40:49 -76.0 Dark Up 73.8 247.4 Up 07:28:43 - 07:52:55 1083
DCO 07:40:45 -75.9 Dark Up 73.2 249.1 Up 07:28:39 - 07:52:51 1066
Mohave Valley 07:40:50 -76.4 Dark Up 74.3 247.5 Up 07:28:44 - 07:52:56 1054
Wildwood 07:41:04 -77.5 Dark Down 77.6 242.6 Up 07:28:58 - 07:53:10 1008
Lake Havasu City 07:40:49 -76.7 Dark Up 74.3 249.2 Up 07:28:43 - 07:52:55 1008
Parker 07:40:49 -77.1 Dark Up 74.4 250.5 Up 07:28:43 - 07:52:55 969
Idyllwild 07:40:57 -77.8 Dark Down 76.4 247.9 Up 07:28:51 - 07:53:03 947
Blythe 07:40:51 -77.6 Dark Up 74.8 251.8 Up 07:28:45 - 07:52:57 914
Calipatria 07:40:54 -78.3 Dark Up 75.6 252.2 Up 07:28:48 - 07:53:00 868
Yuma 07:40:51 -78.5 Dark Up 75.0 255.0 Up 07:28:45 - 07:52:57 812

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 84719, (2018/11/30 07:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 18.30  93
44Zet Per      03:54:07.9 +31:53:01  2.8  6.09  98
11 Tau         03:40:46.3 +25:19:46  6.1  2.93 103
PPM 092643     03:35:26.2 +27:50:47  8.5  0.45 103
PPM 092586     03:31:56.7 +27:51:30  9.5  0.34 104
84719          03:33:26.4 +27:45:44 15.8       104
Positions are for J2000

Event circumstances last updated at 2016/12/02 19:20:56 UT

Marc W. Buie, Southwest Research Institute

RECON