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7445 Trajanus (4116 P-L)
Classification: Mars-crossing Asteroid          SPK-ID: 2007445
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2434476049721063 3.5627e-08  
a 2.197482054643105 5.6812e-09 au
q 1.662510311471058 7.8943e-08 au
i 1.185299610410141 3.8356e-06 deg
node 226.5542236150961 0.00018888 deg
peri 109.765280835307 0.00018903 deg
M 192.0240931108534 1.0004e-05 deg
tp 2459755.676310436777
(2022-Jun-25.17631044)
3.4449e-05 TDB
period 1189.834158116122
3.26
4.6141e-06
1.263e-08
d
yr
n .3025631744931513 1.1733e-09 deg/d
Q 2.732453797815153 7.0643e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1696  
   data-arc span      22087 days (60.47 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53684  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:43:32  

Additional Information
 Earth MOID = .651605 au 
 Jupiter MOID = 2.65593 au 
 T_jup = 3.628 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO448987  
rotation period rot_per 6.10802 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]

7445 Trajanus (4116 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 4116 P-L = 1986 RL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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