Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    5.623777E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T05:37:44+0800
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    1 Object 1

    AOE ID 49729
    NORAD ID 49729
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 58663
    NORAD ID 58663
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-3251 TIANMU-1 22
    Time of Closest Approach 2026-10-21T18:13:16+0000
    Collision Probability (Pc) 5.623777E-6
    Conjunction Distance (km) 1.576 km
    Relative Speed (km/s) 14.461 km/s
    Conjunction Risk Parameters R (Radial): 0.218 | I (In-track): 0.5 | C (Cross-track): -1.478
    Collision Risk Index (CRI) 0.5
    X Position (km) -3097.177 -3096.343
    Position Y (km) -4741.522 -4742.77
    Position Z (km) 3842.185 3841.705
    Velocity X (km/s) 6.25 -3.319
    Velocity Y (km/s) -0.547 -2.895
    Velocity Z (km/s) 4.35 -6.234

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3251 TIANMU-1 22
    Semimajor Axis (a) 6848.829 km 6846.060 km
    Eccentricity (e) 0.000141 0.000230
    Inclination (i) 53.1565° 97.4602°
    RAAN 213.6022° 50.2877°
    Perigee Argument 83.0728° 243.4113°
    Mean Anomaly (M) 277.0434° 116.6894°
    Apogee 471.661 km 469.499 km
    Perigee 469.723 km 466.347 km
    Orbit Epoch 2026-10-20T04:26:38+0000 2026-10-20T07:06:59+0000

    STARLINK-3251 & TIANMU-1 22 Collision Probability (Pc) Trend

    STARLINK-3251 & TIANMU-1 22 Collision Probability (Pc) TrendNot Available

    STARLINK-3251 & TIANMU-1 22 Miss Distance (Miss Distance) Trend

    STARLINK-3251 & TIANMU-1 22 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3251Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    TIANMU-1 22Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3251Collision Probability Trend

    Object 1 Probability TrendNot Available

    TIANMU-1 22Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3251

    No nearby objects data