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JPL Small-Body Database Browser
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74081 (1998 OU1)
Classification: Inner Main-belt Asteroid          SPK-ID: 2074081
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05041341676150234 4.4298e-08  
a 1.797042892177185 5.1843e-09 au
q 1.706447819915561 8.0658e-08 au
i 24.98970034201427 4.9707e-06 deg
node 126.9357787092516 1.0276e-05 deg
peri 233.9550642435516 6.2134e-05 deg
M 178.1542745384248 6.5919e-05 deg
tp 2458165.058479572632
(2018-Feb-15.55847957)
0.0001605 TDB
period 879.9056197781117
2.41
3.8077e-06
1.042e-08
d
yr
n .4091347889001802 1.7705e-09 deg/d
Q 1.887637964438809 5.4457e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1215  
   data-arc span      7624 days (20.87 yr)  
   first obs. used      1998-06-26  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45763  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:01  

Additional Information
 Earth MOID = .72135 au 
 Jupiter MOID = 3.32703 au 
 T_jup = 3.959 
[ 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 15.1   n/a MPO400697  
rotation period rot_per 46.1 h n/a LCDB (Rev. 2019-January); 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:
[Warner, B.D. (2012) Minor Planet Bull. 39, 245-252.]

74081 (1998 OU1)          Discovered 1998-Jul-24 by NEAT at Haleakala
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 OU1 = 2000 HQ33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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