3I/ATLAS (C/2025 N1)

{
  "designation": "C/2025 N1 (ATLAS)",
  "epoch": "2460882.5",
  "elements": {
    "q": 1.36,
    "e": 6.14,
    "i": 175,
    "omega": 128,
    "node": 322,
    "M": -694,
    "tp": 2460977.983
  },
  "source": "JPL SBDB API - https://ssd-api.jpl.nasa.gov/sbdb.api?des=C%2F2025%20N1&phys-par=1 (retrieved 2025-11-03T03:32:33.281Z)",
  "raw": {
    "phys_par": [
      {
        "value": "12.3",
        "sigma": "0.8",
        "notes": "2 parameter fit from 605 observations, autocmod 3.0g",
        "ref": "28",
        "desc": "absolute magnitude of comet and coma (i.e. total)",
        "name": "M1",
        "title": "comet total magnitude",
        "units": null
      },
      {
        "value": "4.5",
        "sigma": null,
        "notes": "autocmod 3.0g",
        "ref": "28",
        "name": "K1",
        "desc": "comet total magnitude slope parameter",
        "title": "comet total magnitude slope",
        "units": null
      }
    ],
    "object": {
      "spkid": "1004083",
      "pha": false,
      "neo": false,
      "orbit_id": "28",
      "orbit_class": {
        "name": "Hyperbolic Comet",
        "code": "HYP"
      },
      "des": "2025 N1",
      "kind": "cu",
      "prefix": "C",
      "fullname": "C/2025 N1 (ATLAS)"
    },
    "signature": {
      "source": "NASA/JPL Small-Body Database (SBDB) API",
      "version": "1.3"
    },
    "orbit": {
      "producer": "Davide Farnocchia",
      "n_obs_used": 647,
      "moid": "0.363",
      "sb_used": "SB441-N16",
      "cov_epoch": "2460882.5",
      "rms": "0.38",
      "condition_code": null,
      "last_obs": "2025-10-29",
      "epoch": "2460882.5",
      "t_jup": null,
      "soln_date": "2025-10-29 14:21:45",
      "n_dop_obs_used": null,
      "pe_used": "DE441",
      "n_del_obs_used": null,
      "data_arc": "167",
      "first_obs": "2025-05-15",
      "equinox": "J2000",
      "moid_jup": "0.247",
      "not_valid_before": null,
      "elements": [
        {
          "title": "eccentricity",
          "label": "e",
          "value": "6.14",
          "sigma": "0.00057",
          "name": "e",
          "units": null
        },
        {
          "title": "semi-major axis",
          "label": "a",
          "value": "-0.264",
          "sigma": "1e-05",
          "name": "a",
          "units": "au"
        },
        {
          "units": "au",
          "name": "q",
          "label": "q",
          "title": "perihelion distance",
          "value": "1.36",
          "sigma": "9.6e-05"
        },
        {
          "sigma": "6e-05",
          "value": "175",
          "label": "i",
          "title": "inclination; angle with respect to x-y ecliptic plane",
          "units": "deg",
          "name": "i"
        },
        {
          "label": "node",
          "title": "longitude of the ascending node",
          "value": "322",
          "sigma": "0.0011",
          "units": "deg",
          "name": "om"
        },
        {
          "value": "128",
          "sigma": "0.00072",
          "label": "peri",
          "title": "argument of perihelion",
          "units": "deg",
          "name": "w"
        },
        {
          "name": "ma",
          "units": "deg",
          "value": "-694",
          "sigma": "0.039",
          "title": "mean anomaly",
          "label": "M"
        },
        {
          "title": "time of perihelion passage",
          "label": "tp",
          "value": "2460977.983",
          "sigma": "0.00037",
          "name": "tp",
          "units": "TDB"
        },
        {
          "value": null,
          "sigma": null,
          "title": "sidereal orbital period",
          "label": "period",
          "units": "d",
          "name": "per"
        },
        {
          "units": "deg/d",
          "name": "n",
          "sigma": "0.00043",
          "value": "7.27",
          "title": "mean motion",
          "label": "n"
        },
        {
          "units": "au",
          "name": "ad",
          "title": "aphelion distance",
          "label": "Q",
          "value": null,
          "sigma": null
        }
      ],
      "source": "JPL",
      "model_pars": [
        {
          "kind": "EST",
          "title": "non-grav. radial accel.",
          "units": "au/d^2",
          "value": "1.662e-06",
          "sigma": "5.254E-7",
          "n": 1,
          "name": "A1",
          "desc": "non-gravitational radial acceleration parameter"
        },
        {
          "units": "au/d^2",
          "kind": "EST",
          "title": "non-grav. transverse accel.",
          "desc": "non-gravitational transverse acceleration parameter",
          "n": 2,
          "name": "A2",
          "sigma": "2.964E-7",
          "value": "7.089e-07"
        }
      ],
      "not_valid_after": null,
      "orbit_id": "28",
      "two_body": null,
      "comment": null
    }
  },
  "generated": "2025-11-03T03:32:33.281Z"
}