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3668 Ilfpetrov (1982 UM7)
Classification: Main-belt Asteroid          SPK-ID: 2003668
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1037073770835572 1.2474e-08  
a 2.187913254109293 4.8645e-09 au
q 1.961010509239268 2.7835e-08 au
i 3.076812067721235 5.7199e-07 deg
node 194.0242551946346 1.009e-05 deg
peri 32.11525366801799 1.3232e-05 deg
M 110.3043659332555 9.5416e-06 deg
tp 2458838.312233342920
(2019-Dec-20.81223334)
3.1214e-05 TDB
period 1182.071034934788
3.24
3.9423e-06
1.079e-08
d
yr
n .3045502252915454 1.0157e-09 deg/d
Q 2.414815998979318 5.369e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3231  
   data-arc span      13970 days (38.25 yr)  
   first obs. used      1982-10-21  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:24:02  

Additional Information
 Earth MOID = .951185 au 
 Jupiter MOID = 2.55946 au 
 T_jup = 3.666 
[ 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 13.28   n/a E2021B10  
diameter diameter 6.496 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.268 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.220   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3668 Ilfpetrov (1982 UM7)          Discovered 1982-Oct-21 by Karachkina, L. G. at Nauchnyj
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
2036-Oct-19 17:09 < 00:01 Hebe 0.0490838609817587 0.0490817432427998 0.0490859787785761 7.78483448768223 7.7848344714129 2464986.214577894 0.172746442614724 137.266389227722 30.2923327295311 -40.9293041038367 163834.460097085 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 15:25:13 2021-Apr-12 15:25
2059-Jun-18 13:26 < 00:01 Hebe 0.0347091776840339 0.0347072317720926 0.0347111240684239 7.61761934645291 7.61761932294067 2473263.059571396 0.210202652591168 233.379097779722 29.935028159966 -66.4977574906077 159283.736405215 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 15:25:13 2021-Apr-12 15:25
2082-Feb-14 17:09 < 00:01 Hebe 0.0361836166439883 0.0361827399742156 0.0361844939576803 7.52450573574118 7.52450571290794 2481540.214911362 0.269036145513559 331.353460342812 29.756835012478 -84.4284587767565 181019.868802547 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 15:25:13 2021-Apr-12 15:25
2104-Oct-16 03:13 < 00:01 Hebe 0.0457461361111614 0.0457418220030601 0.0457504514262426 7.34331777930411 7.34331776079819 2489818.634133299 0.337843245512595 431.420856511607 29.3806526576337 60.3246436894155 202488.143105368 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 15:25:13 2021-Apr-12 15:25

Alternate Designations
 1982 UM7 = 1974 EU = 1982 XY3 = 1985 VW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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