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30780 (1988 CA2)
Classification: Main-belt Asteroid          SPK-ID: 2030780
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 .0595088369490713 3.3045e-08  
a 2.337925781200773 8.4306e-09 au
q 2.198798537088266 7.8397e-08 au
i 7.106149995519239 3.8644e-06 deg
node 124.1666116766517 3.0107e-05 deg
peri 334.7830350593425 4.5203e-05 deg
M 91.29548348720135 3.4218e-05 deg
tp 2458869.375512442488
(2020-Jan-20.87551244)
0.00012368 TDB
period 1305.703315952267
3.57
7.0626e-06
1.934e-08
d
yr
n .2757134761026835 1.4913e-09 deg/d
Q 2.47705302531328 8.9323e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1628  
   data-arc span      12113 days (33.16 yr)  
   first obs. used      1988-01-19  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53711  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:31:30  

Additional Information
 Earth MOID = 1.21759 au 
 Jupiter MOID = 2.59603 au 
 T_jup = 3.554 
[ 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 14.78   n/a E2021B10  
diameter diameter 2.233 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.09 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.467   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30780 (1988 CA2)          Discovered 1988-Feb-11 by Elst, E. W. at La Silla
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1988 CA2 = 1999 CP56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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