SOCRATES

Search Results


Search parameters:

  • Name(s): Top 10 by Minimum Range
  • Order by Minimum Range
  • Return first 10 items


Data current as of 2019 Jan 24 00:06 UTC

Computation Interval: Start = 2019 Jan 24 00:00:00.000, Stop = 2019 Jan 31 00:00:00.000
Computation Threshold: 5.0 km
Considering: 4,549 Primaries, 17,254 Secondaries (26,166 Conjunctions)

See notes at bottom of page for data field descriptions

Re-sort results by Maximum Probability, Time In.

Action NORAD
Catalog
Number
Name Days
Since
Epoch
Max
Probability
Dilution
Threshold
(km)
Min
Range
(km)
Relative
Velocity
(km/sec)
Start
(UTC)
TCA
(UTC)
Stop
(UTC)
38046 ZIYUAN 3 (ZY 3) [+] 0.752 1.240E-02 0.004 0.019 0.930
43133 OBJECT Y [+] 1.166 2019 Jan 24 06:54:37.608 2019 Jan 24 06:54:42.983 2019 Jan 24 06:54:48.358
43766 OBJECT J [+] 2.740 8.581E-03 0.005 0.022 0.000
43768 AISTECHSAT 2 [+] 2.673 2019 Jan 24 00:00:00.000 2019 Jan 26 04:15:48.275 2019 Jan 28 18:35:52.211
43734 FLOCK 3R-3 [+] 4.969 9.217E-04 0.016 0.069 0.000
43748 FLOCK 3R-2 [+] 4.905 2019 Jan 28 04:29:13.499 2019 Jan 28 11:13:30.019 2019 Jan 28 18:37:10.441
41994 LEMUR-2-SPIRE-MINIONS [+] 8.056 8.617E-04 0.017 0.072 0.070
42017 NAYIF-1 (EO-88) [+] 8.054 2019 Jan 30 22:20:25.768 2019 Jan 30 22:21:37.425 2019 Jan 30 22:22:49.083
42011 FLOCK 3P-16 [+] 2.910 2.152E-04 0.054 0.090 14.864
43891 OBJECT R [+] 2.573 2019 Jan 26 02:54:55.325 2019 Jan 26 02:54:55.661 2019 Jan 26 02:54:55.998
35932 SWISSCUBE [+] 5.422 1.824E-04 0.063 0.090 14.975
35749 IRIDIUM 33 DEB [-] 5.133 2019 Jan 28 12:44:29.715 2019 Jan 28 12:44:30.048 2019 Jan 28 12:44:30.382
22183 COSMOS 2212 [?] 3.264 1.612E-04 0.067 0.100 14.204
10644 DELTA 1 DEB [-] 3.328 2019 Jan 25 23:30:20.345 2019 Jan 25 23:30:20.697 2019 Jan 25 23:30:21.049
05705 COSMOS 468 [?] 2.005 6.952E-04 0.034 0.104 11.070
40493 DMSP 5D-2 F13 DEB [-] 2.339 2019 Jan 24 21:16:55.722 2019 Jan 24 21:16:56.174 2019 Jan 24 21:16:56.626
40111 YAOGAN 20C [+] 4.997 2.239E-04 0.044 0.105 12.861
29853 FENGYUN 1C DEB [-] 5.723 2019 Jan 28 13:57:28.163 2019 Jan 28 13:57:28.552 2019 Jan 28 13:57:28.941
43778 OBJECT W [+] 7.666 1.716E-04 0.052 0.117 13.620
01961 TITAN 3C TRANSTAGE DEB [-] 7.686 2019 Jan 30 19:48:41.591 2019 Jan 30 19:48:41.958 2019 Jan 30 19:48:42.325

10 records found

Data Fields:
  • Action: The Analysis button links to a page which provides a capability to build an interactive 3-D STK/CAT (Conjunction Analysis Tools) scenario detailing the conjunction.
  • NORAD Catalog Number: NORAD Catalog Numbers of the two conjuncting objects.
  • Name: Common names of the two conjuncting objects. Operational status of each object is shown in brackets, using the standard CelesTrak SATCAT codes.
  • Days Since Epoch: The number of days from the epoch of the NORAD two-line element set or operator ephemerides (green) used to produce the prediction until the time of closest approach for the conjunction.
  • Max Probability: Given fixed spherical object radii and relative distance at the time of closest approach (TCA), the projected covariance ellipse is sized and oriented to produce the maximum probability. For these reports the ratio of major-to-minor axes of the projected covariance ellipse is set using radial, in-track, and cross-track values of 100 m, 300 m, 100 m, respectively. If the combined object radius is greater than the relative distance, the maximum probability will be one; such occurrences are not addressed here.
  • Dilution Threshold (km): The standard deviation that produces the maximum probability defines the threshold of dilution. A smaller or larger standard deviation will produce a smaller probability. In the case of computing true probability with a smaller standard deviation, the data is of sufficient quality to associate low probability with low risk. For a larger standard deviation, this is not the case and the resulting true probability calculation becomes "diluted." If operating in this dilution region, the recommendation is to obtain better data and reassess the encounter. If time or resources do not permit, then the maximum probability should be used in place of the true probability.
  • Min Range (km): The distance between the two conjuncting objects at the time of closest approach.
  • Start (UTC): Time when the two conjuncting objects come within the computation threshold from each other.
  • TCA (UTC): Time of closest approach.
  • Stop (UTC): Time when the two conjuncting objects move beyond the computation threshold from each other.
  • Relative Velocity (km/sec): Relative velocity of the two conjuncting objects at the time of closest approach.

TLE Data Space Data
Current GPS
Archives EOP
Documentation Space Weather
SATCAT Columns
Boxscore Software
SOCRATES
Dr. T.S. Kelso [TS.Kelso@celestrak.com]
Follow CelesTrak on Twitter @TSKelso
Last updated: 2019 Jan 24 01:35:02 UTC
Accessed 1 times since 2000 December 16
Current system time: 2019 Jan 24 08:39:59 UTC