Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    7.108993E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-31T09:52:28+0800
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    1 Object 1

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

    2 Object 2

    AOE ID 55955
    NORAD ID 55955
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB STARLINK-5878
    Time of Closest Approach 2026-10-31T12:13:22+0000
    Collision Probability (Pc) 7.108993E-5
    Conjunction Distance (km) 0.681 km
    Relative Speed (km/s) 9.908 km/s
    Conjunction Risk Parameters R (Radial): 0.666 | I (In-track): -0.11 | C (Cross-track): -0.084
    Collision Risk Index (CRI) 0.72
    X Position (km) 322.463 322.627
    Position Y (km) 2844.09 2844.325
    Position Z (km) 6327.173 6327.79
    Velocity X (km/s) -4.495 -6.681
    Velocity Y (km/s) 5.658 -3.114
    Velocity Z (km/s) -2.316 1.737

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB STARLINK-5878
    Semimajor Axis (a) 6976.028 km 6950.203 km
    Eccentricity (e) 0.003639 0.000282
    Inclination (i) 73.9137° 69.9999°
    RAAN 305.3715° 32.8022°
    Perigee Argument 123.9604° 260.6282°
    Mean Anomaly (M) 236.5044° 99.4558°
    Apogee 623.274 km 574.024 km
    Perigee 572.508 km 570.108 km
    Orbit Epoch 2026-10-30T09:57:25+0000 2026-10-30T08:38:51+0000

    COSMOS 2251 DEB & STARLINK-5878 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & STARLINK-5878 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & STARLINK-5878 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & STARLINK-5878 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5878Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5878Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data