Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.404072E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-11-02T09:05:53+0800
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    1 Object 1

    AOE ID 54752
    NORAD ID 54752
    Object Type PAYLOAD
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 68280
    NORAD ID 68280
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SHIYAN 21 (SY-21) STARLINK-37070
    Time of Closest Approach 2026-11-03T06:08:59+0000
    Collision Probability (Pc) 1.404072E-6
    Conjunction Distance (km) 1.707 km
    Relative Speed (km/s) 2.3 km/s
    Conjunction Risk Parameters R (Radial): 0.619 | I (In-track): -1.572 | C (Cross-track): 0.235
    Collision Risk Index (CRI) 0.38
    X Position (km) 2180.084 2180.929
    Position Y (km) -6457.269 -6456.231
    Position Z (km) 591.202 592.26
    Velocity X (km/s) 5.756 4.181
    Velocity Y (km/s) 2.36 1.978
    Velocity Z (km/s) 4.446 6.077

    Orbital Parameters 国际轨道数据源

    Parameter SHIYAN 21 (SY-21) STARLINK-37070
    Semimajor Axis (a) 6858.970 km 6840.951 km
    Eccentricity (e) 0.002441 0.000129
    Inclination (i) 35.9929° 53.1601°
    RAAN 290.3916° 296.2611°
    Perigee Argument 9.5170° 99.9665°
    Mean Anomaly (M) 350.6022° 194.0472°
    Apogee 497.578 km 463.696 km
    Perigee 464.088 km 461.932 km
    Orbit Epoch 2026-11-01T21:11:18+0000 2026-10-31T20:00:02+0000

    SHIYAN 21 (SY-21) & STARLINK-37070 Collision Probability (Pc) Trend

    SHIYAN 21 (SY-21) & STARLINK-37070 Collision Probability (Pc) TrendNot Available

    SHIYAN 21 (SY-21) & STARLINK-37070 Miss Distance (Miss Distance) Trend

    SHIYAN 21 (SY-21) & STARLINK-37070 Miss Distance (Miss Distance) TrendNot Available

    SHIYAN 21 (SY-21)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-37070Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SHIYAN 21 (SY-21)Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37070Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SHIYAN 21 (SY-21)

    No nearby objects data