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7725 Sel'vinskij (1972 RX1)
Classification: Main-belt Asteroid          SPK-ID: 2007725
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .182355402709202 4.4677e-08  
a 2.438308073328551 7.7176e-09 au
q 1.993669422687625 1.0713e-07 au
i 4.009624433373603 3.9334e-06 deg
node 178.1190046374762 4.7963e-05 deg
peri 221.8483126051706 4.8714e-05 deg
M 215.0527498931036 8.1338e-06 deg
tp 2459760.436491227729
(2022-Jun-29.93649123)
3.231e-05 TDB
period 1390.693074158512
3.81
6.6026e-06
1.808e-08
d
yr
n .258863732544171 1.229e-09 deg/d
Q 2.882946723969477 9.1249e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2000  
   data-arc span      17424 days (47.70 yr)  
   first obs. used      1972-09-11  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48999  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:58:54  

Additional Information
 Earth MOID = 1.00248 au 
 Jupiter MOID = 2.53406 au 
 T_jup = 3.477 
[ 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 14.24   n/a E2021B10  
diameter diameter 9.907 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 24.8856 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.043   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7725 Sel'vinskij (1972 RX1)          Discovered 1972-Sep-11 by Chernykh, N. S. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1972 RX1 = 1972 TO3 = 1991 RT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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