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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1607163775340335 4.4992e-08  
a 3.206969706383771 2.3376e-08 au
q 2.691557152312388 1.4898e-07 au
i 10.9923907913135 4.7169e-06 deg
node 267.4516668346723 2.9168e-05 deg
peri 126.2996988759396 3.3721e-05 deg
M 252.3298505124599 1.8297e-05 deg
tp 2459627.884129433064
(2022-Feb-17.38412943)
0.00011047 TDB
period 2097.687127498975
5.74
2.2935e-05
6.279e-08
d
yr
n .1716175855210685 1.8764e-09 deg/d
Q 3.722382260455153 2.7132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2194  
   data-arc span      15563 days (42.61 yr)  
   first obs. used      1976-12-18  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39823  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:22:47  

Additional Information
 Earth MOID = 1.71677 au 
 Jupiter MOID = 1.76996 au 
 T_jup = 3.144 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456629.5 (2013-Dec-03.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1648145367614449 4.4556e-08  
q 2.671530093126854 1.4679e-07 au
tp 2457538.259482701060
(2016-May-29.75948270)
9.7258e-05 TDB
node 267.485280101505 2.9199e-05 deg
peri 126.8854910502217 3.3554e-05 deg
i 10.9971241018841 4.7173e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2194  
   data-arc span      15563 days (42.61 yr)  
   first obs. used      1976-12-18  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39823  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:22:47  

Additional Information
 Jupiter MOID = 1.76996 au 
 T_jup = 3.144 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.985227828459381E-15 -6.481527676938194E-15 -1.071397830086583E-12 9.902034869265131E-15 -2.145634492433545E-13 -1.122845869468718E-17
q -6.481527676938194E-15 2.154616118798789E-14 4.081351332995283E-12 -3.004641192367327E-14 7.648068119002962E-13 1.083970847190618E-15
tp -1.071397830086583E-12 4.081351332995283E-12 9.45920053646035E-9 -1.608289024303155E-11 1.650029023539148E-9 3.264603878060405E-12
node 9.902034869265131E-15 -3.004641192367327E-14 -1.608289024303155E-11 8.52586130676142E-10 -8.396063165207501E-10 1.531998319867992E-11
peri -2.145634492433545E-13 7.648068119002962E-13 1.650029023539148E-9 -8.396063165207501E-10 1.125900830420216E-9 -1.451219422742517E-11
i -1.122845869468718E-17 1.083970847190618E-15 3.264603878060405E-12 1.531998319867992E-11 -1.451219422742517E-11 2.225336501154207E-11

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 12.0   n/a MPO473822  
diameter diameter 25.982 km 0.272 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
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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