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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627728516087477 3.0354e-08  
a 3.11087280558882 1.1578e-08 au
q 2.604507168031022 9.3372e-08 au
i 1.053599471739893 3.5502e-06 deg
node 207.8096502004323 0.00017122 deg
peri 125.4670921250837 0.0001715 deg
M 92.41851542782567 1.0043e-05 deg
tp 2458686.008391498414
(2019-Jul-21.50839150)
5.5736e-05 TDB
period 2004.111169749489
5.49
1.1189e-05
3.063e-08
d
yr
n .1796307537395739 1.0029e-09 deg/d
Q 3.617238443146617 1.3463e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3741  
   data-arc span      42026 days (115.06 yr)  
   first obs. used      1905-12-27  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45535  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:50:20  

Additional Information
 Earth MOID = 1.59258 au 
 Jupiter MOID = 1.75549 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

[ hide close-approach data ]
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 1.83450972177428 1.83450929649407 1.83451014705438 1.91053977089246 1.65128137783548 2435762.385732247 0.994453521312547 57.5596865196153 12.5333131507009 89.664464165047 2796477.56172749 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50
1966-Oct-26 13:37 < 00:01 Jupiter 1.78146819369859 1.78146792047806 1.78146846691902 2.11233549667857 1.87377557599748 2439425.067628638 0.814721080351028 39.2922639576875 9.6270591872039 -89.005262658573 3586845.76487983 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50
2028-Jan-11 18:12 < 00:01 Jupiter 1.83264625726217 1.83264594789612 1.83264656662812 1.90124894860794 1.64023674404255 2461782.258363247 0.329405684498328 45.941580829346 12.8324911009429 -87.8134731530308 3374898.51674097 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50
2038-Jan-22 03:57 < 00:01 Jupiter 1.78651267129662 1.78651233933887 1.78651300325427 2.11482920905885 1.87730160618583 2465445.664482975 0.512433942701359 39.1449809676675 7.65573557331371 89.5397203276878 3148824.67423452 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50
2099-Apr-08 17:42 00:02 Jupiter 1.83092742527263 1.83092695431238 1.83092789623288 1.8925403343303 1.62986813916165 2487802.237354419 1.5739320818144 80.9361256620418 14.2078834105707 87.6685890542948 2738308.7760378 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50
2109-Apr-19 15:02 00:02 Jupiter 1.79026804841201 1.7902675449222 1.79026855190161 2.11668613805967 1.87992234779617 2491465.126082715 1.78923800241799 48.2826049119704 13.0607116714432 -80.9771610434967 2174664.47550516 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50
2170-Jul-04 18:13 00:03 Jupiter 1.82942925154745 1.82942852586026 1.82942997723621 1.88669643352568 1.62284532869692 2513821.258989885 2.84468997588608 130.354866818077 15.1039137983197 85.9647794961992 2584039.65268452 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50
2180-Jul-15 13:47 00:03 Jupiter 1.79933493513374 1.7993342327058 1.79933563756148 2.12953727031567 1.89563841410473 2517485.073967627 3.07345548415197 68.1763992901774 14.6956600422433 -74.6997346041656 1983451.18396972 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:50:30 2021-Feb-24 00:50

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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