Conjunction Event Detail

    ⚠
    Extreme Risk
    Extreme collision probability. Maneuver strongly recommended for primary asset.
    1.390552E-3
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T18:52:03+0800
    View CDM
    Download CDM 1.0

    1 Object 1

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

    2 Object 2

    AOE ID 26323
    NORAD ID 26323
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter TERRA CZ-4 DEB
    Time of Closest Approach 2026-10-30T15:32:48+0000
    Collision Probability (Pc) 1.390552E-3
    Conjunction Distance (km) 0.037 km
    Relative Speed (km/s) 3.258 km/s
    Conjunction Risk Parameters R (Radial): 0.002 | I (In-track): 0.037 | C (Cross-track): -0.004
    Collision Risk Index (CRI) 0.98
    X Position (km) -146.661 -146.624
    Position Y (km) 1030.307 1030.304
    Position Z (km) -6999.244 -6999.247
    Velocity X (km/s) 7.324 7.307
    Velocity Y (km/s) -1.541 1.674
    Velocity Z (km/s) -0.382 0.143

    Orbital Parameters 国际轨道数据源

    Parameter TERRA CZ-4 DEB
    Semimajor Axis (a) 7067.486 km 7073.951 km
    Eccentricity (e) 0.000298 0.006562
    Inclination (i) 97.9290° 98.4203°
    RAAN 347.0285° 12.3293°
    Perigee Argument 139.4751° 357.0534°
    Mean Anomaly (M) 343.9856° 60.3293°
    Apogee 691.459 km 742.235 km
    Perigee 687.239 km 649.393 km
    Orbit Epoch 2026-10-29T22:27:23+0000 2026-10-29T22:06:39+0000

    TERRA & CZ-4 DEB Collision Probability (Pc) Trend

    TERRA & CZ-4 DEB Collision Probability (Pc) TrendNot Available

    TERRA & CZ-4 DEB Miss Distance (Miss Distance) Trend

    TERRA & CZ-4 DEB Miss Distance (Miss Distance) TrendNot Available

    TERRAMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    TERRACollision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TERRA

    No nearby objects data