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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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1956-Oct-15 21:15 00:01 Jupiter 1.83450972170345 1.8345092956768 1.83451014772998 1.91053974484978 1.65128134769319 2435762.385738986 1.00973800233476 58.8176556318808 12.8249214702632 -89.8582892648143 2765681.96915296 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56
1966-Oct-26 13:37 < 00:01 Jupiter 1.7814681931559 1.7814679188246 1.7814684674871 2.11233538911914 1.87377545466681 2439425.067651728 0.824851294127409 40.3933411618197 9.89215513007433 -89.334517227967 3542252.45853325 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56
2028-Jan-11 18:12 < 00:01 Jupiter 1.83264625152611 1.83264592908123 1.83264657397088 1.90124893353441 1.64023672568842 2461782.258362881 0.337948954188655 46.5675208484604 13.3088403469011 -87.8684548765614 3227471.25414125 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56
2038-Jan-22 03:57 < 00:01 Jupiter 1.786512674089 1.78651234115453 1.78651300702337 2.11482921492487 1.8773016131888 2465445.664476457 0.527454730273836 40.2040229623259 7.72654123963712 89.191964880686 3136964.40218868 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56
2099-Apr-08 17:42 00:02 Jupiter 1.83092741572323 1.83092692068038 1.83092791076608 1.89254024785621 1.62986803727086 2487802.237326267 1.60716323646224 82.1364589160936 14.7911471611286 87.3206058054178 2618942.2212016 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56
2109-Apr-19 15:02 00:02 Jupiter 1.7902680536533 1.79026754527613 1.79026856203027 2.11668616796845 1.87992238220857 2491465.126065134 1.82877062273624 49.4066894267483 13.3338818529066 -81.345400153299 2146446.61153074 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56
2170-Jul-04 18:13 00:03 Jupiter 1.82942923948506 1.82942848366428 1.82942999530728 1.88669638418113 1.62284526944853 2513821.258967487 2.90220705576305 132.544166377024 15.6891532617517 85.6994353134234 2487431.23557816 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56
2180-Jul-15 13:46 00:03 Jupiter 1.79933494193959 1.79933423026765 1.79933565361143 2.12953731226835 1.89563846217315 2517485.073943460 3.13744368378036 69.6066459386201 15.0717423865214 -74.9198014699102 1950760.6573227 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:56:42 2020-Dec-18 01:56

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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