RECON: TNO occultation with 84922

Event between (84922) 03VS2 and star TYC22393-00920-1 with event index number of 178108

Geocentric closest approach at 2019/01/30 11:04:48 UTC

J2000 position of star is 05:13:12.6 +33:07:46
Equinox of date position of star is 05:14:23.0 +33:08:58
Stellar brightness V=11.1, use SENSEUP=8
Star is 163 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=19.9

[RECON map]
TNO is 36.7 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 15.5 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 193 seconds.
The 1-sigma cross-track error in the shadow position is 1731 km.
The sky-plane scale is 26135.2 km/arcsec.

The TNO has an absolute magnitude Hv=4.2
Diameter=871.0 km assuming a 5% albedo -- 56.2 sec chord
Diameter=355.6 km assuming a 30% albedo -- 23.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 84922, (2019/01/30 11:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.1 +16:32:46  0.8 18.63 178
3Iot Aur       04:58:14.4 +33:11:40  2.7  3.39 165
14 Aur         05:16:39.1 +32:42:28  5.2  0.64 163
PPM 070028     05:13:24.4 +32:55:00  7.9  0.32 164
PPM 070038     05:14:01.0 +33:04:15  9.6  0.12 163
84922          05:14:27.6 +33:09:03 11.1       163
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 4.7 sigma about the mid-time.
The median site spacing is 32.9 km RECON observability=0.2 and success probability=4.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:58:50 -44.0 Dark Down 20.6 297.3 Low 10:43:50 - 11:13:50 1692
Tonasket 10:58:50 -44.1 Dark Down 20.4 297.3 Low 10:43:50 - 11:13:50 1673
Okanogan 10:58:49 -44.3 Dark Down 20.4 297.4 Low 10:43:49 - 11:13:49 1638
Niwot 10:58:24 -37.0 Dark Up 7.3 307.7 Really Low 10:43:24 - 11:13:24 1618
Brewster 10:58:48 -44.6 Dark Down 20.4 297.3 Low 10:43:48 - 11:13:48 1606
Manson/Chelan 10:58:47 -44.9 Dark Down 20.5 297.2 Low 10:43:47 - 11:13:47 1573
Entiat 10:58:47 -45.0 Dark Down 20.4 297.2 Low 10:43:47 - 11:13:47 1552
Wenatchee 10:58:47 -45.2 Dark Down 20.4 297.2 Low 10:43:47 - 11:13:47 1526
Ellensburg 10:58:46 -45.5 Dark Down 20.3 297.2 Low 10:43:46 - 11:13:46 1481
Pasco 10:58:42 -45.0 Dark Down 19.1 298.3 Really Low 10:43:42 - 11:13:42 1474
PNWRO 10:58:41 -45.0 Dark Down 18.9 298.5 Really Low 10:43:41 - 11:13:41 1463
Yakima 10:58:44 -45.7 Dark Down 20.2 297.3 Low 10:43:44 - 11:13:44 1444
George/Umatilla 10:58:41 -45.3 Dark Down 19.1 298.3 Really Low 10:43:41 - 11:13:41 1436
Toppenish/White Swan 10:58:43 -45.7 Dark Down 20.0 297.5 Really Low 10:43:43 - 11:13:43 1432
Goldendale 10:58:42 -46.2 Dark Down 20.0 297.4 Really Low 10:43:42 - 11:13:42 1366
The Dalles 10:58:41 -46.6 Dark Down 20.1 297.3 Low 10:43:41 - 11:13:41 1331
Maupin 10:58:40 -46.7 Dark Down 19.8 297.5 Really Low 10:43:40 - 11:13:40 1298
Madras/Culver 10:58:38 -47.0 Dark Down 19.6 297.6 Really Low 10:43:38 - 11:13:38 1248
Redmond 10:58:36 -47.2 Dark Down 19.5 297.7 Really Low 10:43:36 - 11:13:36 1214
Sisters 10:58:38 -47.4 Dark Down 19.8 297.4 Really Low 10:43:38 - 11:13:38 1199
Bend 10:58:37 -47.3 Dark Down 19.5 297.7 Really Low 10:43:37 - 11:13:37 1189
Oregon Observatory 10:58:36 -47.5 Dark Down 19.5 297.6 Really Low 10:43:36 - 11:13:36 1167
La Pine/Gilchrist 10:58:36 -47.6 Dark Down 19.4 297.7 Really Low 10:43:36 - 11:13:36 1146
North Lake 10:58:34 -47.4 Dark Down 18.8 298.1 Really Low 10:43:34 - 11:13:34 1133
Paisley 10:58:32 -47.4 Dark Down 18.4 298.5 Really Low 10:43:32 - 11:13:32 1099
Lakeview 10:58:31 -47.5 Dark Down 18.0 298.8 Really Low 10:43:31 - 11:13:31 1062
Chiloquin 10:58:33 -48.3 Dark Down 19.2 297.8 Really Low 10:43:33 - 11:13:33 1031
Cedarville 10:58:29 -47.6 Dark Down 17.6 299.0 Really Low 10:43:29 - 11:13:29 1011
Klamath Falls 10:58:32 -48.4 Dark Down 18.9 298.0 Really Low 10:43:32 - 11:13:32 1003
Tulelake 10:58:31 -48.3 Dark Down 18.6 298.2 Really Low 10:43:31 - 11:13:31 992
Fall River/Burney 10:58:29 -48.6 Dark Down 18.1 298.5 Really Low 10:43:29 - 11:13:29 913
Susanville 10:58:27 -48.3 Dark Down 17.4 299.1 Really Low 10:43:27 - 11:13:27 888
Gimple 10:58:26 -48.6 Dark Down 17.4 299.0 Really Low 10:43:26 - 11:13:26 854
Greenville 10:58:26 -48.7 Dark Down 17.4 299.0 Really Low 10:43:26 - 11:13:26 850
Reno 10:58:23 -48.1 Dark Down 16.4 299.7 Really Low 10:43:23 - 11:13:23 848
Portola 10:58:25 -48.4 Dark Down 16.9 299.3 Really Low 10:43:25 - 11:13:25 842
Tonopah 10:58:19 -46.6 Dark Up 13.9 301.4 Really Low 10:43:19 - 11:13:19 837
Quincy 10:58:25 -48.7 Dark Down 17.3 299.1 Really Low 10:43:25 - 11:13:25 832
Yerington 10:58:22 -47.8 Dark Down 15.7 300.2 Really Low 10:43:22 - 11:13:22 828
Carson City 10:58:23 -48.2 Dark Down 16.2 299.8 Really Low 10:43:23 - 11:13:23 816
Hawthorne 10:58:21 -47.5 Dark Up 15.1 300.6 Really Low 10:43:21 - 11:13:21 811
Gardnerville 10:58:22 -48.2 Dark Down 16.0 299.9 Really Low 10:43:22 - 11:13:22 796
Indian Springs 10:58:15 -45.8 Dark Up 12.1 302.5 Really Low 10:43:15 - 11:13:15 780
DCO 10:58:11 -44.0 Dark Up 9.6 304.0 Really Low 10:43:11 - 11:13:11 779
Patrick 10:58:12 -44.6 Dark Up 10.2 303.6 Really Low 10:43:12 - 11:13:12 769
Henderson 10:58:14 -45.3 Dark Up 11.3 302.9 Really Low 10:43:14 - 11:13:14 767
Beatty 10:58:17 -46.5 Dark Up 13.0 301.9 Really Low 10:43:17 - 11:13:17 755
Kingman/Dolan Springs 10:58:12 -44.8 Dark Up 10.2 303.5 Really Low 10:43:12 - 11:13:12 739
Lee Vining 10:58:20 -48.0 Dark Up 15.1 300.5 Really Low 10:43:20 - 11:13:20 736
Searchlight/Boulder City 10:58:13 -45.4 Dark Up 11.0 303.1 Really Low 10:43:13 - 11:13:13 719
Bishop 10:58:18 -47.7 Dark Up 14.3 301.0 Really Low 10:43:18 - 11:13:18 717
Laughlin/Bullhead City 10:58:12 -45.2 Dark Up 10.6 303.3 Really Low 10:43:12 - 11:13:12 711
Mohave Valley 10:58:11 -45.2 Dark Up 10.4 303.3 Really Low 10:43:11 - 11:13:11 687
Lone Pine 10:58:16 -47.6 Dark Up 13.7 301.3 Really Low 10:43:16 - 11:13:16 664
Lake Havasu City 10:58:10 -45.1 Dark Up 10.0 303.5 Really Low 10:43:10 - 11:13:10 664
Parker 10:58:10 -45.1 Dark Up 9.8 303.6 Really Low 10:43:10 - 11:13:10 634
Blythe 10:58:09 -45.5 Dark Up 9.7 303.5 Really Low 10:43:09 - 11:13:09 571
Yuma 10:58:08 -45.6 Dark Up 9.3 303.6 Really Low 10:43:08 - 11:13:08 486
Calipatria 10:58:08 -46.3 Dark Up 10.1 303.1 Really Low 10:43:08 - 11:13:08 478
Idyllwild 10:58:10 -47.2 Dark Up 11.3 302.5 Really Low 10:43:10 - 11:13:10 471
CPSLO 10:58:16 -50.0 Dark Up 14.9 300.3 Really Low 10:43:16 - 11:13:16 419
Wildwood 10:58:12 -48.6 Dark Up 12.8 301.5 Really Low 10:43:12 - 11:13:12 408

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 84922, (2019/01/30 11:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 18.63 178
3Iot Aur       04:56:59.6 +33:09:58  2.7  3.39 165
14 Aur         05:15:24.3 +32:41:15  5.2  0.64 163
PPM 070028     05:12:09.6 +32:53:42  7.9  0.32 164
PPM 070038     05:12:46.1 +33:02:57  9.6  0.12 163
84922          05:13:12.6 +33:07:46 11.1       163
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:12:45 UT

Marc W. Buie, Southwest Research Institute

RECON