Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    6.729116E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-27T12:44:34+0800
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    1 Object 1

    AOE ID 1982
    NORAD ID 1982
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 43255
    NORAD ID 43255
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ESSA 1 (OT-3) IRIDIUM 148
    Time of Closest Approach 2026-10-27T19:44:24+0000
    Collision Probability (Pc) 6.729116E-6
    Conjunction Distance (km) 1.392 km
    Relative Speed (km/s) 10.356 km/s
    Conjunction Risk Parameters R (Radial): -0.374 | I (In-track): -0.958 | C (Cross-track): -0.937
    Collision Risk Index (CRI) 0.52
    X Position (km) 202.96 202.746
    Position Y (km) 1065.643 1066.898
    Position Z (km) -7082.623 -7082.061
    Velocity X (km/s) 5.935 -4.286
    Velocity Y (km/s) -4.434 -6.004
    Velocity Z (km/s) -0.465 -1.027

    Orbital Parameters 国际轨道数据源

    Parameter ESSA 1 (OT-3) IRIDIUM 148
    Semimajor Axis (a) 7109.075 km 7155.805 km
    Eccentricity (e) 0.008084 0.000222
    Inclination (i) 97.8017° 86.3974°
    RAAN 321.9303° 235.3824°
    Perigee Argument 57.1592° 83.1164°
    Mean Anomaly (M) 303.7353° 277.0284°
    Apogee 788.406 km 779.259 km
    Perigee 673.470 km 776.077 km
    Orbit Epoch 2026-10-26T22:37:13+0000 2026-10-26T20:45:15+0000

    ESSA 1 (OT-3) & IRIDIUM 148 Collision Probability (Pc) Trend

    ESSA 1 (OT-3) & IRIDIUM 148 Collision Probability (Pc) TrendNot Available

    ESSA 1 (OT-3) & IRIDIUM 148 Miss Distance (Miss Distance) Trend

    ESSA 1 (OT-3) & IRIDIUM 148 Miss Distance (Miss Distance) TrendNot Available

    ESSA 1 (OT-3)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 148Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ESSA 1 (OT-3)Collision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 148Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ESSA 1 (OT-3)

    No nearby objects data