Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.588703E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T12:23:22+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 13771
    NORAD ID 13771
    Object Type ROCKET BODY
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 53004
    NORAD ID 53004
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SL-3 R/B STARLINK-4253
    Time of Closest Approach 2026-09-06T09:35:53+0000
    Collision Probability (Pc) 1.588703E-6
    Conjunction Distance (km) 2.076 km
    Relative Speed (km/s) 6.623 km/s
    Conjunction Risk Parameters R (Radial): -1.743 | I (In-track): 1.015 | C (Cross-track): -0.488
    Collision Risk Index (CRI) 0.39
    X Position (km) 2573.091 2571.479
    Position Y (km) 3732.92 3731.834
    Position Z (km) 5126.145 5125.417
    Velocity X (km/s) -4.609 -7.071
    Velocity Y (km/s) -3.569 1.92
    Velocity Z (km/s) 4.912 2.144

    Orbital Parameters 国际轨道数据源

    Parameter SL-3 R/B STARLINK-4253
    Semimajor Axis (a) 6831.869 km 6848.874 km
    Eccentricity (e) 0.002584 0.000117
    Inclination (i) 81.1560° 53.1630°
    RAAN 48.8144° 13.0136°
    Perigee Argument 264.2730° 96.3511°
    Mean Anomaly (M) 95.5563° 263.7624°
    Apogee 471.388 km 471.539 km
    Perigee 436.076 km 469.935 km
    Orbit Epoch 2026-09-03T11:05:36+0000 2026-09-03T01:25:49+0000

    SL-3 R/B & STARLINK-4253 Collision Probability (Pc) Trend

    SL-3 R/B & STARLINK-4253 Collision Probability (Pc) TrendNot Available

    SL-3 R/B & STARLINK-4253 Miss Distance (Miss Distance) Trend

    SL-3 R/B & STARLINK-4253 Miss Distance (Miss Distance) TrendNot Available

    SL-3 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4253Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-3 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4253Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-3 R/B

    No nearby objects data