Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.493714E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-11-01T15:55:46+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    Name SPOT 4
    AOE ID 25260
    NORAD ID 25260
    Object Type PAYLOAD
    Country
    FR FR
    ← VS →

    2 Object 2

    AOE ID 38474
    NORAD ID 38474
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter SPOT 4 IRIDIUM 33 DEB
    Time of Closest Approach 2026-11-01T10:47:42+0000
    Collision Probability (Pc) 1.493714E-6
    Conjunction Distance (km) 2.774 km
    Relative Speed (km/s) 14.967 km/s
    Conjunction Risk Parameters R (Radial): 2.756 | I (In-track): -0.033 | C (Cross-track): 0.315
    Collision Risk Index (CRI) 0.38
    X Position (km) -1812.462 -1812.945
    Position Y (km) -2680.949 -2682.217
    Position Z (km) 6286.078 6288.498
    Velocity X (km/s) -5.503 4.576
    Velocity Y (km/s) -3.935 4.9
    Velocity Z (km/s) -3.265 3.396

    Orbital Parameters 国际轨道数据源

    Parameter SPOT 4 IRIDIUM 33 DEB
    Semimajor Axis (a) 7083.681 km 7097.565 km
    Eccentricity (e) 0.001301 0.002743
    Inclination (i) 98.2474° 86.3435°
    RAAN 38.6703° 229.4163°
    Perigee Argument 155.6653° 84.9550°
    Mean Anomaly (M) 204.5161° 275.4786°
    Apogee 714.761 km 738.899 km
    Perigee 696.327 km 699.957 km
    Orbit Epoch 2026-10-31T12:49:32+0000 2026-10-31T01:25:34+0000

    SPOT 4 & IRIDIUM 33 DEB Collision Probability (Pc) Trend

    SPOT 4 & IRIDIUM 33 DEB Collision Probability (Pc) TrendNot Available

    SPOT 4 & IRIDIUM 33 DEB Miss Distance (Miss Distance) Trend

    SPOT 4 & IRIDIUM 33 DEB Miss Distance (Miss Distance) TrendNot Available

    SPOT 4Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 33 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SPOT 4Collision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 33 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SPOT 4

    No nearby objects data