Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.243372E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T08:15:16+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 58790
    NORAD ID 58790
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SL-3 R/B STARLINK-31187
    Time of Closest Approach 2026-10-22T18:04:30+0000
    Collision Probability (Pc) 3.243372E-6
    Conjunction Distance (km) 1.863 km
    Relative Speed (km/s) 13.388 km/s
    Conjunction Risk Parameters R (Radial): -1.578 | I (In-track): 0.486 | C (Cross-track): 0.861
    Collision Risk Index (CRI) 0.45
    X Position (km) -4381.446 -4381.786
    Position Y (km) 5096.07 5097.901
    Position Z (km) 1365.363 1365.365
    Velocity X (km/s) 0.079 -4.978
    Velocity Y (km/s) -1.919 -2.938
    Velocity Z (km/s) 7.378 -4.976

    Orbital Parameters 国际轨道数据源

    Parameter SL-3 R/B STARLINK-31187
    Semimajor Axis (a) 6852.150 km 6861.141 km
    Eccentricity (e) 0.000705 0.000068
    Inclination (i) 81.1849° 43.0013°
    RAAN 131.5202° 338.2132°
    Perigee Argument 223.6985° 265.1066°
    Mean Anomaly (M) 136.3694° 94.9708°
    Apogee 478.844 km 483.470 km
    Perigee 469.182 km 482.538 km
    Orbit Epoch 2026-10-20T12:40:45+0000 2026-10-20T02:35:42+0000

    SL-3 R/B & STARLINK-31187 Collision Probability (Pc) Trend

    SL-3 R/B & STARLINK-31187 Collision Probability (Pc) TrendNot Available

    SL-3 R/B & STARLINK-31187 Miss Distance (Miss Distance) Trend

    SL-3 R/B & STARLINK-31187 Miss Distance (Miss Distance) TrendNot Available

    SL-3 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31187Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-3 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31187Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-3 R/B

    No nearby objects data