Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.398648E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T18:52:03+0800
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    1 Object 1

    Name TERRA
    AOE ID 25994
    NORAD ID 25994
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 34680
    NORAD ID 34680
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter TERRA COSMOS 2251 DEB
    Time of Closest Approach 2026-10-31T08:45:12+0000
    Collision Probability (Pc) 1.398648E-6
    Conjunction Distance (km) 2.728 km
    Relative Speed (km/s) 12.816 km/s
    Conjunction Risk Parameters R (Radial): -0.418 | I (In-track): 1.398 | C (Cross-track): -2.304
    Collision Risk Index (CRI) 0.38
    X Position (km) 1476.603 1475.637
    Position Y (km) -1268.594 -1266.056
    Position Z (km) 6785.597 6785.847
    Velocity X (km/s) -7.194 4.606
    Velocity Y (km/s) 1.223 5.931
    Velocity Z (km/s) 1.788 0.102

    Orbital Parameters 国际轨道数据源

    Parameter TERRA COSMOS 2251 DEB
    Semimajor Axis (a) 7067.486 km 7061.181 km
    Eccentricity (e) 0.000298 0.000837
    Inclination (i) 97.9290° 74.0427°
    RAAN 347.0285° 235.7666°
    Perigee Argument 139.4751° 244.0834°
    Mean Anomaly (M) 343.9856° 290.9316°
    Apogee 691.459 km 688.954 km
    Perigee 687.239 km 677.134 km
    Orbit Epoch 2026-10-29T22:27:23+0000 2026-10-29T14:28:45+0000

    TERRA & COSMOS 2251 DEB Collision Probability (Pc) Trend

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

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

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

    TERRAMiss 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

    TERRACollision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TERRA

    No nearby objects data