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74592 (1999 PR4)
Classification: Main-belt Asteroid          SPK-ID: 2074592
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1527238946413459 2.9427e-08  
a 2.233916066008099 5.9251e-09 au
q 1.892743704105468 6.689e-08 au
i 3.403319332024718 4.1403e-06 deg
node 191.6379156276717 5.1018e-05 deg
peri 226.2397233551048 5.2848e-05 deg
M 138.3641368295141 1.4184e-05 deg
tp 2458927.773247495112
(2020-Mar-19.27324750)
4.7235e-05 TDB
period 1219.547454769117
3.34
4.852e-06
1.328e-08
d
yr
n .2951914651555357 1.1744e-09 deg/d
Q 2.57508842791073 6.83e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1288  
   data-arc span      7962 days (21.80 yr)  
   first obs. used      1999-08-15  
   last obs. used      2021-06-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:55:34  

Additional Information
 Earth MOID = .906136 au 
 Jupiter MOID = 2.74875 au 
 T_jup = 3.622 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.78   n/a MPO637058  
rotation period rot_per 2.5 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

74592 (1999 PR4)          Discovered 1999-Aug-15 by Hug, G. at Farpoint
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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