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848 Inna (A915 RQ)
Classification: Main-belt Asteroid          SPK-ID: 2000848
[ 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627188005808913 3.1138e-08  
a 3.109993859340007 1.1718e-08 au
q 2.603939388734264 9.6176e-08 au
i 1.053782726616578 3.6582e-06 deg
node 207.8168035907398 0.00017337 deg
peri 125.3677714039938 0.00017366 deg
M 56.58093310078787 1.0075e-05 deg
tp 2458685.648817531084
(2019-Jul-21.14881753)		 5.6006e-05 TDB
period 2003.261867154176
5.48		 1.1322e-05
3.1e-08		 d
yr
n .1797069099665009 1.0157e-09 deg/d
Q 3.61604832994575 1.3625e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3602  
   data-arc span      41962 days (114.89 yr)  
   first obs. used      1905-12-27  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:56:34  

Additional Information
 Earth MOID = 1.5939 au 
 Jupiter MOID = 1.75614 au 
 T_jup = 3.198 
[ show covariance matrix ]

[ 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 11.3   n/a MPO452169  
diameter diameter 33.027 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 45.479 h n/a LCDB (Rev. 2020-October); 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.069   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

848 Inna (A915 RQ)          Discovered 1915-Sep-05 by Neujmin, G. at Simeis
Independent discovery Sept. 9 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A915 RQ = 1932 WJ = 1934 AC = 1934 CM1 = 1934 CV = 1937 RD = 1959 TJ = A905 YA 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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