Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.132667E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T22:08:05+0800
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    1 Object 1

    AOE ID 46971
    NORAD ID 46971
    Object Type DEBRIS
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66749
    NORAD ID 66749
    Object Type PAYLOAD
    Country
    PL PL

    Conjunction Constraints

    Parameter IRIDIUM 33 DEB PIAST-S1
    Time of Closest Approach 2026-10-21T17:51:15+0000
    Collision Probability (Pc) 3.132667E-6
    Conjunction Distance (km) 1.945 km
    Relative Speed (km/s) 15.211 km/s
    Conjunction Risk Parameters R (Radial): -0.857 | I (In-track): 0.088 | C (Cross-track): 1.743
    Collision Risk Index (CRI) 0.45
    X Position (km) 4906.472 4906.953
    Position Y (km) -83.813 -82.091
    Position Z (km) 4816.266 4817.029
    Velocity X (km/s) 5.329 -5.274
    Velocity Y (km/s) 0.595 -1.287
    Velocity Z (km/s) -5.405 5.337

    Orbital Parameters 国际轨道数据源

    Parameter IRIDIUM 33 DEB PIAST-S1
    Semimajor Axis (a) 6879.470 km 6879.831 km
    Eccentricity (e) 0.000204 0.000099
    Inclination (i) 86.3113° 97.4075°
    RAAN 184.5037° 3.5875°
    Perigee Argument 345.6301° 218.1091°
    Mean Anomaly (M) 28.9719° 142.0075°
    Apogee 502.734 km 502.374 km
    Perigee 499.932 km 501.014 km
    Orbit Epoch 2026-10-17T23:21:58+0000 2026-10-18T21:46:53+0000

    IRIDIUM 33 DEB & PIAST-S1 Collision Probability (Pc) Trend

    IRIDIUM 33 DEB & PIAST-S1 Collision Probability (Pc) TrendNot Available

    IRIDIUM 33 DEB & PIAST-S1 Miss Distance (Miss Distance) Trend

    IRIDIUM 33 DEB & PIAST-S1 Miss Distance (Miss Distance) TrendNot Available

    IRIDIUM 33 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    PIAST-S1Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IRIDIUM 33 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    PIAST-S1Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IRIDIUM 33 DEB

    No nearby objects data