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4071 Rostovdon (1981 RD2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004071
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1595165477423797 4.3779e-08  
a 3.20954337297626 2.4318e-08 au
q 2.697568094289653 1.4543e-07 au
i 10.97474038319225 4.53e-06 deg
node 267.417982248857 2.7406e-05 deg
peri 126.0413115579606 3.1717e-05 deg
M 286.80492611624 1.8028e-05 deg
tp 2459627.514530124473
(2022-Feb-17.01453012)
0.0001081 TDB
period 2100.212796955966
5.75
2.3869e-05
6.535e-08
d
yr
n .1714112020085686 1.9481e-09 deg/d
Q 3.721518651662866 2.8197e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2320  
   data-arc span      15991 days (43.78 yr)  
   first obs. used      1976-12-18  
   last obs. used      2020-09-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38986  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:54:17  

Additional Information
 Earth MOID = 1.72175 au 
 Jupiter MOID = 1.77229 au 
 T_jup = 3.144 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.08   n/a E2020-QM5  
diameter diameter 25.982 km 0.272 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 282.005 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 0.050   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4071 Rostovdon (1981 RD2)          Discovered 1981-Sep-07 by Karachkina, L. G. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 RD2 = 1976 YL = 1987 SF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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