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52820 (1998 RS2)
Classification: Main-belt Asteroid          SPK-ID: 2052820
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2030266561493327 3.9314e-08  
a 2.213593809395126 7.3764e-09 au
q 1.76417526020077 8.9594e-08 au
i 2.447977786713147 4.1323e-06 deg
node 74.58077152796564 8.5103e-05 deg
peri 210.1258737143938 8.5872e-05 deg
M 327.957140350605 1.4254e-05 deg
tp 2459307.571550321765
(2021-Apr-03.07155032)
4.7992e-05 TDB
period 1202.943761499236
3.29
6.0129e-06
1.646e-08
d
yr
n .2992658605680201 1.4959e-09 deg/d
Q 2.663012358589481 8.874e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1047  
   data-arc span      14275 days (39.08 yr)  
   first obs. used      1981-05-08  
   last obs. used      2020-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52893  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:48:22  

Additional Information
 Earth MOID = .746356 au 
 Jupiter MOID = 2.4909 au 
 T_jup = 3.627 
[ 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 15.87   n/a E2021B10  
diameter diameter 3.978 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.13412 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.041   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52820 (1998 RS2)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RS2 = 1981 JU4 = 2001 MK5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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