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308377 (2005 RM30)
Classification: Main-belt Asteroid          SPK-ID: 2308377
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995731069084634 8.8682e-08  
a 2.546521094097182 2.0689e-08 au
q 2.038303967540268 2.3374e-07 au
i 11.40350126048336 7.6287e-06 deg
node 315.8179104806903 2.6324e-05 deg
peri 43.82897170641343 2.9647e-05 deg
M 233.6868280454382 1.3271e-05 deg
tp 2459521.293415011952
(2021-Nov-02.79341501)
5.8496e-05 TDB
period 1484.29199032185
4.06
1.8088e-05
4.952e-08
d
yr
n .2425398791796609 2.9557e-09 deg/d
Q 3.054738220654096 2.4818e-08 au
  Orbit Determination Parameters
   # obs. used (total)      333  
   data-arc span      6759 days (18.51 yr)  
   first obs. used      2001-11-11  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6016  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:01:31  

Additional Information
 Earth MOID = 1.0494 au 
 Jupiter MOID = 2.43746 au 
 T_jup = 3.387 
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Orbital Elements at Epoch 2457439.5 (2016-Feb-21.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1986589027668558 8.8504e-08  
q 2.04161548009596 2.3287e-07 au
tp 2458037.392354743723
(2017-Oct-10.89235474)
4.9686e-05 TDB
node 315.8386292791456 2.632e-05 deg
peri 43.91173453198191 2.9712e-05 deg
i 11.40146825404454 7.6278e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      333  
   data-arc span      6759 days (18.51 yr)  
   first obs. used      2001-11-11  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6016  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:01:31  

Additional Information
 Jupiter MOID = 2.43746 au 
 T_jup = 3.387 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.833044634508068E-15 -2.056821608260474E-14 -2.33549764081431E-12 7.702827868214949E-14 -7.509308948940812E-13 -3.275734073741542E-14
q -2.056821608260474E-14 5.422963442610206E-14 6.242584861961416E-12 -2.041209169831448E-13 1.975928828085378E-12 8.77647402570975E-14
tp -2.33549764081431E-12 6.242584861961416E-12 2.468742677656816E-9 -2.501881945040284E-11 7.021123967436658E-10 1.172205483933561E-11
node 7.702827868214949E-14 -2.041209169831448E-13 -2.501881945040284E-11 6.927650827491667E-10 -6.857615108100605E-10 9.947379003929811E-11
peri -7.509308948940812E-13 1.975928828085378E-12 7.021123967436658E-10 -6.857615108100605E-10 8.828176405010589E-10 -9.445352988127217E-11
i -3.275734073741542E-14 8.77647402570975E-14 1.172205483933561E-11 9.947379003929811E-11 -9.445352988127217E-11 5.818384372539513E-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 16.5   n/a MPO326429  
rotation period rot_per 5.924 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

308377 (2005 RM30)          Discovered 2005-Sep-10 by LONEOS at Anderson Mesa
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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