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    Space Conjunction Data Service (SCDS)

    Basic Info
    Advanced Filters
    • ① Extremely Close < 0.02 km
    • ② Close 0.02 ~ 0.1 km
    • ③ Medium 0.1 ~ 0.3 km
    • ④ Long 0.3 ~ 1 km
    • ⑤ Extremely Long ≥ 1 km

    无数据

    • ① Extreme ; 10⁻³
    • ② High 10⁻³ ~ 10⁻⁴
    • ③ Medium 10⁻⁴ ~ 10⁻⁵
    • ④ Low 10⁻⁵ ~ 10⁻⁶
    • ⑤ Minimal ; 10⁻⁶

    无数据

    • Probability Desc
    • Probability Asc
    • TCA Desc
    • TCA Asc
    • Miss Distance Desc
    • Miss Distance Asc

    无数据

    Conjunction Data List Total 56590 records
    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 Miss Distance ≤ 3 km, latest approach time ≤ 72 hours
    Data Production Rules
    TCA ≤ 72 hours Overall Miss Distance ≤ 3 km
    Collision Probability Levels (1-5)
    ① Extreme ; 10⁻³ ② High 10⁻³ ~ 10⁻⁴ ③ Medium 10⁻⁴ ~ 10⁻⁵ ④ Low 10⁻⁵ ~ 10⁻⁶ ⑤ Minimal ; 10⁻⁶
    Miss Distance Levels (1-5)
    ① Extremely Close < 0.02 km ② Close 0.02 ~ 0.1 km ③ Medium 0.1 ~ 0.3 km ④ Long 0.3 ~ 1 km ⑤ Extremely Long ≥ 1 km
    Total 15 records
    Event ID Objects TCA
    Miss Dist (km)
    Dist Level
    Collision Risk Probability
    Risk Level
    Collision Risk Index (CRI) Action
    CDM_260912-112204-344005-870027
    ZHUHAI-1 OVS-02 (43440)
    TIANMU-1 15 (58700)
    2026-09-12T
    11:22:19+0000
    0.659 km
    远距离
    1.034356E-4 高风险
    0.75
    Details
    View CDM
    Download CDM
    CDM_260903-222005-628705-870022
    STARLINK-30107 (56287)
    TIANMU-1 15 (58700)
    2026-09-03T
    22:20:06+0000
    1.141 km
    极远距离
    1.675312E-5 中风险
    0.59
    Details
    View CDM
    Download CDM
    CDM_260910-174605-870005-873324
    TIANMU-1 15 (58700)
    STARLINK-31164 (58733)
    2026-09-10T
    17:46:43+0000
    1.241 km
    极远距离
    1.251776E-5 中风险
    0.57
    Details
    View CDM
    Download CDM
    CDM_260903-190805-775005-870022
    STARLINK-30357 (57750)
    TIANMU-1 15 (58700)
    2026-09-03T
    19:08:34+0000
    1.407 km
    极远距离
    8.13273E-6 低风险
    0.53
    Details
    View CDM
    Download CDM
    CDM_260913-035805-735605-870021
    STARLINK-6355 (57356)
    TIANMU-1 15 (58700)
    2026-09-13T
    03:58:57+0000
    1.497 km
    极远距离
    6.620812E-6 低风险
    0.51
    Details
    View CDM
    Download CDM
    CDM_260912-170305-870006-205421
    TIANMU-1 15 (58700)
    STARLINK-32408 (62054)
    2026-09-12T
    17:03:12+0000
    2.110 km
    极远距离
    2.444211E-6 低风险
    0.43
    Details
    View CDM
    Download CDM
    CDM_260913-035105-870005-978921
    TIANMU-1 15 (58700)
    STARLINK-31863 (59789)
    2026-09-13T
    03:51:03+0000
    2.280 km
    极远距离
    2.024612E-6 低风险
    0.41
    Details
    View CDM
    Download CDM
    CDM_260911-155205-737705-870022
    STARLINK-6358 (57377)
    TIANMU-1 15 (58700)
    2026-09-11T
    15:52:50+0000
    2.326 km
    极远距离
    1.974144E-6 低风险
    0.41
    Details
    View CDM
    Download CDM
    CDM_260911-044805-870006-734422
    TIANMU-1 15 (58700)
    STARLINK-36422 (67344)
    2026-09-11T
    04:48:16+0000
    2.627 km
    极远距离
    1.584327E-6 低风险
    0.39
    Details
    View CDM
    Download CDM
    CDM_260912-012505-787605-870021
    STARLINK-30429 (57876)
    TIANMU-1 15 (58700)
    2026-09-12T
    01:25:07+0000
    2.682 km
    极远距离
    1.46516E-6 低风险
    0.38
    Details
    View CDM
    Download CDM
    CDM_260912-135805-870005-958222
    TIANMU-1 15 (58700)
    STARLINK-31701 (59582)
    2026-09-12T
    13:58:20+0000
    2.451 km
    极远距离
    1.326128E-6 低风险
    0.37
    Details
    View CDM
    Download CDM
    CDM_260906-174605-394305-870023
    YAOGAN-36 01A (53943)
    TIANMU-1 15 (58700)
    2026-09-06T
    17:46:06+0000
    2.885 km
    极远距离
    1.092155E-6 低风险
    0.36
    Details
    View CDM
    Download CDM
    CDM_260906-020605-723105-870023
    STARLINK-5840 (57231)
    TIANMU-1 15 (58700)
    2026-09-06T
    02:06:39+0000
    2.590 km
    极远距离
    1.087297E-6 低风险
    0.36
    Details
    View CDM
    Download CDM
    CDM_260912-060405-870006-697422
    TIANMU-1 15 (58700)
    STARLINK-35780 (66974)
    2026-09-12T
    06:04:24+0000
    2.979 km
    极远距离
    9.399783E-7 极低风险
    0.34
    Details
    View CDM
    Download CDM
    CDM_260906-205805-870005-967024
    TIANMU-1 15 (58700)
    STARLINK-31860 (59670)
    2026-09-06T
    20:58:17+0000
    2.891 km
    极远距离
    9.374472E-7 极低风险
    0.34
    Details
    View CDM
    Download CDM
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