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30838 (1991 CM1)
Classification: Main-belt Asteroid          SPK-ID: 2030838
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .140336748880575 3.1934e-08  
a 2.458253319269023 8.28e-09 au
q 2.113270040517927 8.0427e-08 au
i 3.052161624959625 3.5638e-06 deg
node 294.5990372772918 7.7875e-05 deg
peri 167.57636963 7.9668e-05 deg
M 352.6561452021911 1.6501e-05 deg
tp 2459425.218381397733
(2021-Jul-29.71838140)
6.4564e-05 TDB
period 1407.791628215259
3.85
7.1127e-06
1.947e-08
d
yr
n .25571966247334 1.292e-09 deg/d
Q 2.80323659802012 9.442e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1417  
   data-arc span      10974 days (30.05 yr)  
   first obs. used      1991-02-07  
   last obs. used      2021-02-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51734  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:40:57  

Additional Information
 Earth MOID = 1.1305 au 
 Jupiter MOID = 2.3298 au 
 T_jup = 3.476 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457305.5 (2015-Oct-10.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394554602390686 3.1557e-08  
q 2.11579099666278 7.9337e-08 au
tp 2456605.243939464421
(2013-Nov-08.74393946)
6.3181e-05 TDB
node 294.7046878900446 7.8051e-05 deg
peri 166.71407650628 7.9881e-05 deg
i 3.047846064940327 3.5592e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1417  
   data-arc span      10974 days (30.05 yr)  
   first obs. used      1991-02-07  
   last obs. used      2021-02-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51734  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:40:57  

Additional Information
 Jupiter MOID = 2.3298 au 
 T_jup = 3.476 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.958321054031932E-16 -2.493841830731515E-15 4.638400383899272E-13 5.69072242964219E-15 1.426486991939323E-13 1.243523041411994E-16
q -2.493841830731515E-15 6.294403029617899E-15 -1.111222460647785E-12 -1.362598812257711E-14 -3.382893045543932E-13 -1.573921898430319E-16
tp 4.638400383899272E-13 -1.111222460647785E-12 3.991810392096774E-9 1.10280111123318E-12 1.090930311003271E-9 2.026809946362167E-12
node 5.69072242964219E-15 -1.362598812257711E-14 1.10280111123318E-12 6.09199000493832E-9 -6.082854335158753E-9 6.632140321261499E-11
peri 1.426486991939323E-13 -3.382893045543932E-13 1.090930311003271E-9 -6.082854335158753E-9 6.381035681474522E-9 -6.567910491797325E-11
i 1.243523041411994E-16 -1.573921898430319E-16 2.026809946362167E-12 6.632140321261499E-11 -6.567910491797325E-11 1.266807845396512E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.93   n/a E2021B10  
diameter diameter 2.791 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.359   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30838 (1991 CM1)          Discovered 1991-Feb-07 by Seki, T. at Geisei
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 CM1 = 1997 YP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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