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15385 Dallolmo (1997 SP4)
Classification: Main-belt Asteroid          SPK-ID: 2015385
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08027122989611955 3.5603e-08  
a 2.961154980036383 1.9283e-08 au
q 2.723459427875843 1.0586e-07 au
i 11.74497744432723 4.7342e-06 deg
node 130.6157449771709 2.3221e-05 deg
peri 321.9537067370551 4.3614e-05 deg
M 79.04683864382861 3.5348e-05 deg
tp 2458591.830582570710
(2019-Apr-18.33058257)
0.00018328 TDB
period 1861.187528794746
5.10
1.818e-05
4.977e-08
d
yr
n .1934248937468037 1.8894e-09 deg/d
Q 3.198850532196922 2.0831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1267  
   data-arc span      15957 days (43.69 yr)  
   first obs. used      1976-09-16  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50179  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:34:01  

Additional Information
 Earth MOID = 1.7503 au 
 Jupiter MOID = 1.9351 au 
 T_jup = 3.230 
[ 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 14.1   n/a MPO492923  
diameter diameter 5.174 km 0.452 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.678 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.240   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15385 Dallolmo           Discovered 1997 Sept. 25 at Osservatorio San Vittore.
With degrees in both law and physics, Umberto Dall'Olmo (1925-1980) was an amateur astronomer who principally observed Jupiter and studied flare stars with Rosino. He was also interested in the history of astronomy and worked as a technician at the University of Bologna's Institute of Astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ 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
2068-Mar-12 02:31 00:02 Jupiter 1.97779238266916 1.97779186569861 1.97779289964082 3.97166192417248 3.86232638991833 2476452.605123839 1.54859449467976 120.559910664214 19.2993140189331 -82.272978894767 3660031.63211461 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 02:34:04 2020-Nov-13 02:34
2103-Dec-30 04:46 00:03 Jupiter 1.96083132201869 1.96083078263979 1.96083186140115 4.01885685251894 3.90989362352264 2489527.698660139 2.54869432163227 197.576461178483 18.5279100936029 -84.5063976379034 3513541.12322419 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 02:34:04 2020-Nov-13 02:34
2139-Oct-14 20:13 00:04 Jupiter 1.93979597430999 1.93979549362405 1.939796455001 4.02740482159311 3.91748371589057 2502600.342422228 3.58806402679511 288.696064207682 18.2872838712644 -87.212138151241 3383953.42983398 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 02:34:04 2020-Nov-13 02:34
2175-Jul-29 04:41 00:05 Jupiter 1.94070067230832 1.94070026557019 1.94070107904645 4.04387307735571 3.93446383197265 2515671.694863652 4.68667319909316 382.881601735126 18.3500718722202 -89.9248006978283 3294928.51798173 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 02:34:04 2020-Nov-13 02:34

Alternate Designations
 1997 SP4 = 2000 FX47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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