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4918 Rostropovich (1974 QU1)
Classification: Main-belt Asteroid          SPK-ID: 2004918
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2332364874356985 1.759e-08  
a 2.639721094356098 8.5004e-09 au
q 2.024041818498564 4.8088e-08 au
i 1.769141247299072 6.4546e-07 deg
node 205.2919609326377 1.548e-05 deg
peri 195.2711913997431 1.5263e-05 deg
M 250.9837829721506 6.3439e-06 deg
tp 2459674.877517479298
(2022-Apr-05.37751748)
2.8988e-05 TDB
period 1566.518367161106
4.29
7.5667e-06
2.072e-08
d
yr
n .2298089875909999 1.11e-09 deg/d
Q 3.255400370213632 1.0483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2354  
   data-arc span      16768 days (45.91 yr)  
   first obs. used      1974-08-24  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48044  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:56:27  

Additional Information
 Earth MOID = 1.03129 au 
 Jupiter MOID = 2.16392 au 
 T_jup = 3.356 
[ 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 13.7   n/a MPO435745  
diameter diameter 11.876 km 0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20.1407 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:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.045   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4918 Rostropovich (1974 QU1)          Discovered 1974-Aug-24 by Chernykh, L. I. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1974 QU1 = 1983 YC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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