Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.246899E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-31T09:52:29+0800
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    1 Object 1

    AOE ID 33999
    NORAD ID 33999
    Object Type DEBRIS
    Country
    CIS CIS
    ← VS →

    2 Object 2

    Name SJ-9A
    AOE ID 38860
    NORAD ID 38860
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter COSMOS 2251 DEB SJ-9A
    Time of Closest Approach 2026-10-31T05:02:31+0000
    Collision Probability (Pc) 9.246899E-7
    Conjunction Distance (km) 2.543 km
    Relative Speed (km/s) 5.134 km/s
    Conjunction Risk Parameters R (Radial): 2.297 | I (In-track): 1.027 | C (Cross-track): 0.369
    Collision Risk Index (CRI) 0.34
    X Position (km) 854.354 854.944
    Position Y (km) -4168.51 -4170.69
    Position Z (km) -5568.264 -5569.433
    Velocity X (km/s) 4.431 -0.453
    Velocity Y (km/s) -4.518 -6.053
    Velocity Z (km/s) 4.065 4.45

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB SJ-9A
    Semimajor Axis (a) 6976.028 km 6989.454 km
    Eccentricity (e) 0.003639 0.002571
    Inclination (i) 73.9137° 97.6912°
    RAAN 305.3715° 271.0861°
    Perigee Argument 123.9604° 167.3971°
    Mean Anomaly (M) 236.5044° 192.7893°
    Apogee 623.274 km 629.285 km
    Perigee 572.508 km 593.349 km
    Orbit Epoch 2026-10-30T09:57:25+0000 2026-10-30T21:12:03+0000

    COSMOS 2251 DEB & SJ-9A Collision Probability (Pc) Trend

    COSMOS 2251 DEB & SJ-9A Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & SJ-9A Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & SJ-9A Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SJ-9AMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    SJ-9ACollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data