Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.193638E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T01:26:35+0800
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    1 Object 1

    AOE ID 39679
    NORAD ID 39679
    Object Type ROCKET BODY
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 59937
    NORAD ID 59937
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SL-4 R/B STARLINK-31879
    Time of Closest Approach 2026-10-20T19:41:05+0000
    Collision Probability (Pc) 1.193638E-6
    Conjunction Distance (km) 2.891 km
    Relative Speed (km/s) 11.167 km/s
    Conjunction Risk Parameters R (Radial): -2.866 | I (In-track): 0.259 | C (Cross-track): -0.262
    Collision Risk Index (CRI) 0.37
    X Position (km) 5028.269 5026.416
    Position Y (km) -4647.454 -4645.242
    Position Z (km) 475.869 475.709
    Velocity X (km/s) 2.918 4.061
    Velocity Y (km/s) 3.739 3.857
    Velocity Z (km/s) 5.931 -5.176

    Orbital Parameters 国际轨道数据源

    Parameter SL-4 R/B STARLINK-31879
    Semimajor Axis (a) 6810.167 km 6861.191 km
    Eccentricity (e) 0.008453 0.000125
    Inclination (i) 51.6049° 43.0021°
    RAAN 322.3777° 151.6871°
    Perigee Argument 200.7617° 272.8178°
    Mean Anomaly (M) 158.9929° 87.2530°
    Apogee 489.594 km 483.910 km
    Perigee 374.466 km 482.198 km
    Orbit Epoch 2026-10-19T03:17:46+0000 2026-10-19T00:33:22+0000

    SL-4 R/B & STARLINK-31879 Collision Probability (Pc) Trend

    SL-4 R/B & STARLINK-31879 Collision Probability (Pc) TrendNot Available

    SL-4 R/B & STARLINK-31879 Miss Distance (Miss Distance) Trend

    SL-4 R/B & STARLINK-31879 Miss Distance (Miss Distance) TrendNot Available

    SL-4 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31879Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-4 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31879Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-4 R/B

    No nearby objects data