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7281 (1988 RX4)
Classification: Main-belt Asteroid          SPK-ID: 2007281
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2118732251985341 4.5989e-08  
a 2.415523465986642 1.3186e-08 au
q 1.903738718705311 1.0932e-07 au
i 3.574201123980358 5.5395e-06 deg
node 103.8706861717093 8.1056e-05 deg
peri 243.9270732251259 8.2496e-05 deg
M 147.5498138500371 1.8735e-05 deg
tp 2457038.480371775417
(2015-Jan-15.98037178)
6.8863e-05 JED
period 1371.245824589695
3.75
1.1228e-05
3.074e-08
d
yr
n .2625349835487882 2.1497e-09 deg/d
Q 2.927308213267973 1.598e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1380  
   data-arc span      24038 days (65.81 yr)  
   first obs. used      1950-06-15  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52825  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:58:42  

Additional Information
 Earth MOID = .899342 au 
 Jupiter MOID = 2.48674 au 
 T_jup = 3.483 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a PDS3 (MPC 28284)  
rotation period rot_per 16.7 h n/a LCDB (Rev. 2016-February); 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:
[Higgins, D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Brinsfield, J.W.; Allen, B.; Warner, B.D. (2008) Minor Planet Bul. 35, 123-126.]

7281 (1988 RX4)          Discovered 1988-Sep-02 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 RX4 = 1992 UV2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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