Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.229336E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T22:37:29+0800
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    1 Object 1

    Name MAST
    AOE ID 31126
    NORAD ID 31126
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 35445
    NORAD ID 35445
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter MAST COSMOS 2251 DEB
    Time of Closest Approach 2026-09-12T06:28:35+0000
    Collision Probability (Pc) 1.229336E-6
    Conjunction Distance (km) 2.77 km
    Relative Speed (km/s) 10.646 km/s
    Conjunction Risk Parameters R (Radial): 1.977 | I (In-track): -1.365 | C (Cross-track): 1.38
    Collision Risk Index (CRI) 0.37
    X Position (km) 2093.397 2090.961
    Position Y (km) 680.679 680.493
    Position Z (km) -6745.808 -6744.503
    Velocity X (km/s) -4.84 -5.131
    Velocity Y (km/s) -5.293 5.308
    Velocity Z (km/s) -2.094 -1.161

    Orbital Parameters 国际轨道数据源

    Parameter MAST COSMOS 2251 DEB
    Semimajor Axis (a) 7062.358 km 7062.255 km
    Eccentricity (e) 0.008224 0.013802
    Inclination (i) 98.4402° 74.0337°
    RAAN 222.9318° 138.8007°
    Perigee Argument 143.1754° 158.4724°
    Mean Anomaly (M) 217.5135° 202.2327°
    Apogee 742.303 km 781.590 km
    Perigee 626.139 km 586.646 km
    Orbit Epoch 2026-09-10T04:04:30+0000 2026-09-11T03:01:59+0000

    MAST & COSMOS 2251 DEB Collision Probability (Pc) Trend

    MAST & COSMOS 2251 DEB Collision Probability (Pc) TrendNot Available

    MAST & COSMOS 2251 DEB Miss Distance (Miss Distance) Trend

    MAST & COSMOS 2251 DEB Miss Distance (Miss Distance) TrendNot Available

    MASTMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    MASTCollision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with MAST

    No nearby objects data