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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2123967443045381 5.0519e-08  
a 2.415180421573288 1.4899e-08 AU
q 1.90220396312306 1.2289e-07 AU
i 3.574888422087502 5.5568e-06 deg
node 103.8779209221693 9.6984e-05 deg
peri 243.8863085184559 9.8169e-05 deg
M 297.4832472605706 1.7835e-05 deg
tp 2457038.576597423430
(2015-Jan-16.07659742)
6.8979e-05 JED
period 1370.953725470436
3.75
1.2686e-05
3.473e-08
d
yr
n .2625909199644706 2.4299e-09 deg/d
Q 2.928156880023516 1.8064e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1162  
   data-arc span      23388 days (64.03 yr)  
   first obs. used      1950-06-15  
   last obs. used      2014-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54124  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:16:38  

Additional Information
 Earth MOID = .897397 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (809)
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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