Space Conjunction Data Service

    A global standardized CDM data service platform for space conjunction detection, risk analytics

    Conjunction data in this service is generated through a preliminary screening process based on SGP4 (Simplified General Perturbations Model 4) orbit propagation. Space object ephemerides are propagated using publicly available orbital elements to identify potential close-approach events and produce candidate Conjunction Data Messages (CDMs).
    This dataset is provided as a rapid screening product for preliminary conjunction assessment, supporting early detection and prioritization of potential close-approach events. It serves as upstream input for high-precision orbit determination (OD), covariance analysis, and refined collision probability (Pc) evaluation.
    Data Production Rules
    Minimum Conjunction Distance ≤ 3 km, latest approach time ≤ 72 hours
    Today Events
    0
    Period: 08-11 00:00 ~ 08-11 23:59
    Month Events
    0
    Period: 08-01 ~ 08-31
    Next 3 Days Events
    0
    Period: 08-11 00:00 ~ Day 3 23:59
    High Risk Events
    0
    Today 317
    Tomorrow 663
    Day after 744
    Extreme(>10⁻³) + High(10⁻³~10⁻⁴)
    Monitored Objects
    0
    Total monitored space objects

    Collision Level Distribution (Next 3 Days)

    Data Update Time:2026-08-11T10:00:00Z
    Extreme Risk 68 0.2%
    High Risk 999+ 4.7%
    Medium Risk 999+ 13.4%
    Low Risk 999+ 69.9%
    Very Low Risk 999+ 11.8%
    Collision Probability Levels (1-5)

    Upcoming Collision Events (Next 3 Days)

    Data Update Time:2026-08-11T10:00:00Z
    2026-08-13T15:22:27+0000 极高风险: 1.674495E-3
    2026-08-13T07:32:04+0000 极高风险: 1.668763E-3
    2026-08-13T10:07:16+0000 极高风险: 1.593418E-3
    View All Events

    Conjunction Distance Level Distribution (Next 3 Days)

    Data Update Time:2026-08-11T10:00:00Z
    Extremely Close Range 3 0.0%
    Close Range 40 0.1%
    Medium Range 449 1.3%
    Long Range 999+ 12.3%
    Extremely Long Range 999+ 86.3%
    Conjunction Distance Levels (1-5)

    Upcoming Conjunction Distance Events (Next 3 Days)

    Data Update Time:2026-08-11T10:00:00Z
    2026-08-13T07:32:04+0000 极近距离: 0.011km
    2026-08-13T15:22:27+0000 极近距离: 0.015km
    2026-08-13T10:07:16+0000 近距离: 0.026km
    View All Events

    Recent Conjunction Events

    Event ID Objects TCA Rel. Velocity
    Conjunction Distance
    Dist Level
    Collision Risk Probability (CRP)
    Risk Level
    Collision Risk Index (CRI) Action
    CDM_260811-000005-209606-931321
    2026-08-11T
    00:00:34+0000
    14.295km/s
    2.912 km
    极远距离
    1.362084E-6 低风险
    0.38
    CDM_260811-000104-302406-839821
    2026-08-11T
    00:01:23+0000
    4.862km/s
    1.909 km
    极远距离
    1.614115E-6 低风险
    0.39
    CDM_260811-000304-781406-929922
    2026-08-11T
    00:03:15+0000
    5.748km/s
    0.524 km
    远距离
    1.035637E-4 高风险
    0.75
    CDM_260811-000302-194806-902521
    2026-08-11T
    00:03:30+0000
    11.911km/s
    0.803 km
    远距离
    4.845819E-5 中风险
    0.69
    CDM_260811-000303-117904-701221
    2026-08-11T
    00:03:54+0000
    14.094km/s
    1.775 km
    极远距离
    3.848103E-6 低风险
    0.47
    CDM_260811-000403-964103-964523
    2026-08-11T
    00:04:24+0000
    0.11km/s
    2.901 km
    极远距离
    2.447262E-7 极低风险
    0.23
    CDM_260811-000704-865106-796521
    2026-08-11T
    00:07:43+0000
    12.886km/s
    2.811 km
    极远距离
    1.344582E-6 低风险
    0.38
    CDM_260811-000704-869606-814621
    2026-08-11T
    00:07:48+0000
    14.401km/s
    2.854 km
    极远距离
    1.404085E-6 低风险
    0.38
    CDM_260811-000804-461605-648324
    2026-08-11T
    00:08:18+0000
    14.504km/s
    1.696 km
    极远距离
    4.484431E-6 低风险
    0.48
    CDM_260811-000804-603506-766322
    2026-08-11T
    00:08:25+0000
    13.398km/s
    2.758 km
    极远距离
    1.412817E-6 低风险
    0.38
    View All Events

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