Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.792302E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T04:44:36+0800
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    1 Object 1

    AOE ID 58321
    NORAD ID 58321
    Object Type PAYLOAD
    Country
    FR FR
    ← VS →

    2 Object 2

    AOE ID 59848
    NORAD ID 59848
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter PROTOMETHEE STARLINK-31859
    Time of Closest Approach 2026-10-20T12:01:55+0000
    Collision Probability (Pc) 1.792302E-6
    Conjunction Distance (km) 2.173 km
    Relative Speed (km/s) 9.586 km/s
    Conjunction Risk Parameters R (Radial): 2.143 | I (In-track): 0.288 | C (Cross-track): -0.216
    Collision Risk Index (CRI) 0.4
    X Position (km) -5141.542 -5139.806
    Position Y (km) -1590.408 -1589.675
    Position Z (km) 4220.441 4219.361
    Velocity X (km/s) -4.822 0.434
    Velocity Y (km/s) -0.189 -7.295
    Velocity Z (km/s) -5.919 -2.209

    Orbital Parameters 国际轨道数据源

    Parameter PROTOMETHEE STARLINK-31859
    Semimajor Axis (a) 6845.263 km 6837.739 km
    Eccentricity (e) 0.000913 0.001048
    Inclination (i) 97.3676° 42.9975°
    RAAN 9.5184° 90.2500°
    Perigee Argument 87.4362° 295.8229°
    Mean Anomaly (M) 272.7925° 64.1544°
    Apogee 473.376 km 466.766 km
    Perigee 460.876 km 452.438 km
    Orbit Epoch 2026-10-18T15:33:07+0000 2026-10-17T17:58:12+0000

    PROTOMETHEE & STARLINK-31859 Collision Probability (Pc) Trend

    PROTOMETHEE & STARLINK-31859 Collision Probability (Pc) TrendNot Available

    PROTOMETHEE & STARLINK-31859 Miss Distance (Miss Distance) Trend

    PROTOMETHEE & STARLINK-31859 Miss Distance (Miss Distance) TrendNot Available

    PROTOMETHEEMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31859Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    PROTOMETHEECollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31859Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PROTOMETHEE

    No nearby objects data