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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627583162749083 3.0208e-08  
a 3.111483491662799 1.1569e-08 au
q 2.605063677442589 9.2879e-08 au
i 1.05349213048653 3.5155e-06 deg
node 207.7922017463389 0.00017093 deg
peri 125.5594850009704 0.00017121 deg
M 127.5343317130459 1.0021e-05 deg
tp 2458686.310432115886
(2019-Jul-21.81043212)
5.5529e-05 TDB
period 2004.701330254651
5.49
1.1181e-05
3.061e-08
d
yr
n .1795778725573402 1.0016e-09 deg/d
Q 3.617903305883009 1.3452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3826  
   data-arc span      42131 days (115.35 yr)  
   first obs. used      1905-12-27  
   last obs. used      2021-05-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:38:09  

Additional Information
 Earth MOID = 1.59429 au 
 Jupiter MOID = 1.75478 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 11.35   n/a E2021B10  
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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