Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.000843E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T23:41:56+0800
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    1 Object 1

    AOE ID 13121
    NORAD ID 13121
    Object Type ROCKET BODY
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 55355
    NORAD ID 55355
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SL-3 R/B STARLINK-5647
    Time of Closest Approach 2026-09-14T20:35:21+0000
    Collision Probability (Pc) 3.000843E-6
    Conjunction Distance (km) 1.897 km
    Relative Speed (km/s) 12.823 km/s
    Conjunction Risk Parameters R (Radial): 0.082 | I (In-track): 1.037 | C (Cross-track): 1.587
    Collision Risk Index (CRI) 0.45
    X Position (km) 5966.571 5967.309
    Position Y (km) -1143.194 -1141.562
    Position Z (km) 3179.701 3179.077
    Velocity X (km/s) 3.679 -0.782
    Velocity Y (km/s) 0.636 6.56
    Velocity Z (km/s) -6.646 3.814

    Orbital Parameters 国际轨道数据源

    Parameter SL-3 R/B STARLINK-5647
    Semimajor Axis (a) 6853.121 km 6861.192 km
    Eccentricity (e) 0.000833 0.000115
    Inclination (i) 81.1895° 43.0025°
    RAAN 176.8645° 329.8330°
    Perigee Argument 10.2713° 281.5805°
    Mean Anomaly (M) 349.8692° 78.4918°
    Apogee 480.692 km 483.846 km
    Perigee 469.276 km 482.264 km
    Orbit Epoch 2026-09-12T06:43:30+0000 2026-09-12T05:37:54+0000

    SL-3 R/B & STARLINK-5647 Collision Probability (Pc) Trend

    SL-3 R/B & STARLINK-5647 Collision Probability (Pc) TrendNot Available

    SL-3 R/B & STARLINK-5647 Miss Distance (Miss Distance) Trend

    SL-3 R/B & STARLINK-5647 Miss Distance (Miss Distance) TrendNot Available

    SL-3 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5647Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-3 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5647Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-3 R/B

    No nearby objects data