+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 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  [ hide covariance matrix ] Orbital Elements at Epoch 2456561.5 (2013-Sep-26.0) TDB Reference: JPL 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1684091697279849 3.1497e-08   q 2.58378905381799 9.8146e-08 au tp 2456680.222061801235 (2014-Jan-22.72206180) 5.4103e-05 TDB node 208.0097630619958 0.00017492 deg peri 124.7829498065077 0.00017517 deg i 1.045659178151462 3.6617e-06 deg   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  Jupiter MOID = 1.75614 au   T_jup = 3.198  Orbit Covariance (6×6)   e q tp node peri i e 9.920655257404538E-16 -3.076179252279508E-15 3.199518294411992E-13 -1.354090692739848E-16 5.374985115509121E-14 -1.845757773646548E-17 q -3.076179252279508E-15 9.632541770744368E-15 -1.099080740886858E-12 1.17230621665149E-15 -1.884734243859997E-13 1.183100464147624E-16 tp 3.199518294411992E-13 -1.099080740886858E-12 2.927148185019765E-9 1.139386414524931E-11 5.198483652652557E-10 3.92691658687612E-14 node -1.354090692739848E-16 1.17230621665149E-15 1.139386414524931E-11 3.059634005380961E-8 -3.058945470307001E-8 -8.337001157621116E-11 peri 5.374985115509121E-14 -1.884734243859997E-13 5.198483652652557E-10 -3.058945470307001E-8 3.068506835520131E-8 8.335813021492174E-11 i -1.845757773646548E-17 1.183100464147624E-16 3.92691658687612E-14 -8.337001157621116E-11 8.335813021492174E-11 1.340813397891901E-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 11.3   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.DB Last 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 ] 2021-Jan-20 01:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin