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 11:04:47 UTC

J2000 position of star is 05:13:12.6 +33:07:46
Equinox of date position of star is 05:14:19.7 +33:08:55
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 156 seconds.
The 1-sigma cross-track error in the shadow position is 1563 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 5.0 sigma about the mid-time.
The median site spacing is 32.9 km RECON observability=0.2 and success probability=5.1%
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 10:45:21 - 11:12:19 1704
Tonasket 10:58:49 -44.1 Dark Down 20.4 297.3 Low 10:45:20 - 11:12:18 1684
Okanogan 10:58:49 -44.3 Dark Down 20.4 297.4 Low 10:45:20 - 11:12:18 1649
Niwot 10:58:24 -37.0 Dark Up 7.3 307.7 Really Low 10:44:55 - 11:11:53 1634
Brewster 10:58:47 -44.6 Dark Down 20.4 297.3 Low 10:45:18 - 11:12:16 1618
Manson/Chelan 10:58:48 -44.9 Dark Down 20.5 297.2 Low 10:45:19 - 11:12:17 1585
Entiat 10:58:46 -45.0 Dark Down 20.4 297.2 Low 10:45:17 - 11:12:15 1563
Wenatchee 10:58:45 -45.2 Dark Down 20.4 297.2 Low 10:45:16 - 11:12:14 1537
Ellensburg 10:58:45 -45.5 Dark Down 20.3 297.2 Low 10:45:16 - 11:12:14 1492
Pasco 10:58:42 -45.0 Dark Down 19.1 298.3 Really Low 10:45:13 - 11:12:11 1486
PNWRO 10:58:41 -45.0 Dark Down 18.9 298.5 Really Low 10:45:12 - 11:12:10 1475
Yakima 10:58:44 -45.7 Dark Down 20.2 297.3 Low 10:45:15 - 11:12:13 1456
George/Umatilla 10:58:41 -45.3 Dark Down 19.1 298.3 Really Low 10:45:12 - 11:12:10 1448
Toppenish/White Swan 10:58:43 -45.7 Dark Down 20.0 297.5 Really Low 10:45:14 - 11:12:12 1444
Goldendale 10:58:41 -46.2 Dark Down 20.0 297.4 Really Low 10:45:12 - 11:12:10 1378
The Dalles 10:58:41 -46.6 Dark Down 20.1 297.3 Low 10:45:12 - 11:12:10 1343
Maupin 10:58:40 -46.7 Dark Down 19.8 297.5 Really Low 10:45:11 - 11:12:09 1310
Madras/Culver 10:58:38 -47.0 Dark Down 19.6 297.6 Really Low 10:45:09 - 11:12:07 1260
Redmond 10:58:38 -47.1 Dark Down 19.5 297.7 Really Low 10:45:09 - 11:12:07 1226
Sisters 10:58:38 -47.4 Dark Down 19.8 297.4 Really Low 10:45:09 - 11:12:07 1211
Bend 10:58:38 -47.3 Dark Down 19.5 297.7 Really Low 10:45:09 - 11:12:07 1201
Oregon Observatory 10:58:36 -47.5 Dark Down 19.5 297.6 Really Low 10:45:07 - 11:12:05 1180
La Pine/Gilchrist 10:58:36 -47.6 Dark Down 19.4 297.7 Really Low 10:45:07 - 11:12:05 1159
North Lake 10:58:34 -47.4 Dark Down 18.8 298.1 Really Low 10:45:05 - 11:12:03 1146
Paisley 10:58:32 -47.4 Dark Down 18.4 298.5 Really Low 10:45:03 - 11:12:01 1112
Lakeview 10:58:31 -47.5 Dark Down 18.0 298.8 Really Low 10:45:02 - 11:12:00 1075
Chiloquin 10:58:33 -48.3 Dark Down 19.2 297.8 Really Low 10:45:04 - 11:12:02 1043
Cedarville 10:58:29 -47.6 Dark Down 17.6 299.0 Really Low 10:45:00 - 11:11:58 1024
Klamath Falls 10:58:32 -48.4 Dark Down 18.9 298.0 Really Low 10:45:03 - 11:12:01 1016
Tulelake 10:58:31 -48.3 Dark Down 18.6 298.2 Really Low 10:45:02 - 11:12:00 1005
Fall River/Burney 10:58:29 -48.6 Dark Down 18.1 298.5 Really Low 10:45:00 - 11:11:58 925
Susanville 10:58:26 -48.3 Dark Down 17.4 299.1 Really Low 10:44:57 - 11:11:55 902
Gimple 10:58:26 -48.6 Dark Down 17.4 299.0 Really Low 10:44:57 - 11:11:55 867
Greenville 10:58:26 -48.7 Dark Down 17.4 299.0 Really Low 10:44:57 - 11:11:55 863
Reno 10:58:24 -48.1 Dark Down 16.4 299.7 Really Low 10:44:55 - 11:11:53 861
Portola 10:58:25 -48.4 Dark Down 16.9 299.3 Really Low 10:44:56 - 11:11:54 855
Tonopah 10:58:18 -46.6 Dark Up 13.9 301.4 Really Low 10:44:49 - 11:11:47 851
Quincy 10:58:25 -48.7 Dark Down 17.3 299.1 Really Low 10:44:56 - 11:11:54 845
Yerington 10:58:21 -47.8 Dark Down 15.7 300.2 Really Low 10:44:52 - 11:11:50 842
Carson City 10:58:22 -48.2 Dark Down 16.2 299.8 Really Low 10:44:53 - 11:11:51 830
Hawthorne 10:58:20 -47.5 Dark Up 15.1 300.6 Really Low 10:44:51 - 11:11:49 825
Gardnerville 10:58:22 -48.2 Dark Down 16.0 299.9 Really Low 10:44:53 - 11:11:51 809
Indian Springs 10:58:14 -45.8 Dark Up 12.1 302.5 Really Low 10:44:45 - 11:11:43 794
DCO 10:58:11 -44.0 Dark Up 9.6 304.0 Really Low 10:44:42 - 11:11:40 794
Patrick 10:58:12 -44.6 Dark Up 10.2 303.6 Really Low 10:44:43 - 11:11:41 784
Henderson 10:58:13 -45.3 Dark Up 11.3 302.9 Really Low 10:44:44 - 11:11:42 782
Beatty 10:58:16 -46.5 Dark Up 13.0 301.9 Really Low 10:44:47 - 11:11:45 769
Kingman/Dolan Springs 10:58:11 -44.8 Dark Up 10.2 303.5 Really Low 10:44:42 - 11:11:40 755
Lee Vining 10:58:19 -48.0 Dark Up 15.1 300.5 Really Low 10:44:50 - 11:11:48 750
Searchlight/Boulder City 10:58:12 -45.4 Dark Up 11.0 303.1 Really Low 10:44:43 - 11:11:41 734
Bishop 10:58:18 -47.7 Dark Up 14.3 301.0 Really Low 10:44:49 - 11:11:47 731
Laughlin/Bullhead City 10:58:12 -45.2 Dark Up 10.6 303.3 Really Low 10:44:43 - 11:11:41 726
Mohave Valley 10:58:11 -45.2 Dark Up 10.4 303.3 Really Low 10:44:42 - 11:11:40 702
Lake Havasu City 10:58:10 -45.1 Dark Up 10.0 303.5 Really Low 10:44:41 - 11:11:39 679
Lone Pine 10:58:16 -47.6 Dark Up 13.7 301.3 Really Low 10:44:47 - 11:11:45 678
Parker 10:58:10 -45.1 Dark Up 9.8 303.6 Really Low 10:44:41 - 11:11:39 649
Blythe 10:58:09 -45.5 Dark Up 9.7 303.5 Really Low 10:44:40 - 11:11:38 587
Yuma 10:58:07 -45.6 Dark Up 9.3 303.6 Really Low 10:44:38 - 11:11:36 502
Calipatria 10:58:08 -46.3 Dark Up 10.1 303.1 Really Low 10:44:39 - 11:11:37 493
Idyllwild 10:58:10 -47.2 Dark Up 11.3 302.5 Really Low 10:44:41 - 11:11:39 486
CPSLO 10:58:15 -50.0 Dark Up 14.9 300.3 Really Low 10:44:46 - 11:11:44 432
Wildwood 10:58:11 -48.6 Dark Up 12.8 301.5 Really Low 10:44:42 - 11:11:40 423

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 2017/02/01 18:26:57 UT

Marc W. Buie, Southwest Research Institute

RECON