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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456665.5 (2014-Jan-08.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682872155354883 3.0537e-08  
q 2.583796542309215 9.4644e-08 au
tp 2456680.222438151438
(2014-Jan-22.72243815)
5.3485e-05 TDB
node 208.0075463086877 0.0001724 deg
peri 124.7843577958218 0.00017265 deg
i 1.045676857383768 3.519e-06 deg
  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
 Jupiter MOID = 1.75478 au 
 T_jup = 3.198 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.325225599078543E-16 -2.875709383183157E-15 2.598218438871094E-13 -1.679699499038152E-15 4.089469839660028E-14 -1.938739155814247E-17
q -2.875709383183157E-15 8.957524239924799E-15 -8.977040293053345E-13 6.341856752349507E-15 -1.453475200799607E-13 1.205916092751111E-16
tp 2.598218438871094E-13 -8.977040293053345E-13 2.860679984491953E-9 1.119684805553424E-11 5.049234984631116E-10 -5.262568298752635E-15
node -1.679699499038152E-15 6.341856752349507E-15 1.119684805553424E-11 2.972321066802519E-8 -2.971658202329476E-8 -5.525221122737894E-11
peri 4.089469839660028E-14 -1.453475200799607E-13 5.049234984631116E-10 -2.971658202329476E-8 2.980893293645403E-8 5.523654479480048E-11
i -1.938739155814247E-17 1.205916092751111E-16 -5.262568298752635E-15 -5.525221122737894E-11 5.523654479480048E-11 1.238364288925637E-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 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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