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903 Nealley (A918 RH)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000903
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04560729956535199 9.5858e-09  
a 3.237891961091301 1.1639e-08 au
q 3.090220452461565 3.524e-08 au
i 11.7822101369631 3.9793e-07 deg
node 159.3824141296391 1.8825e-06 deg
peri 233.9356648528178 2.3467e-05 deg
M 174.5361775428075 2.5616e-05 deg
tp 2458364.748956472120
(2018-Sep-03.24895647)
0.0001497 TDB
period 2128.099634695724
5.83
1.1475e-05
3.142e-08
d
yr
n .1691650118869894 9.1212e-10 deg/d
Q 3.385563469721037 1.217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3720  
   data-arc span      37586 days (102.90 yr)  
   first obs. used      1918-09-06  
   last obs. used      2021-08-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40188  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:07:37  

Additional Information
 Earth MOID = 2.10795 au 
 Jupiter MOID = 1.84353 au 
 T_jup = 3.150 
[ 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 10.10   n/a MPO636074  
diameter diameter 58.065 km 0.373 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 19.72 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:
[Warner, B.D (2012) Minor Planet Bull. 39, 16-21.]
geometric albedo albedo 0.054   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

903 Nealley (A918 RH)          Discovered 1918-Sep-13 by Palisa, J. at Vienna
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
2070-Dec-15 22:02 < 00:01 Jupiter 1.9972831497182 1.99728298537624 1.99728331406061 4.52931939718748 4.43469948348049 2477461.417781747 0.955919634522568 60.3141126273115 3.71921922890888 82.1413229649879 20277487.2617271 T 59 CATAB v2.0g-lin.ifort 2021-Aug-25 07:09:19 2021-Aug-25 07:09
2082-May-15 18:01 00:01 Jupiter 1.97090234482244 1.97090220765947 1.97090248198619 4.81279683650393 4.72265664208498 2481630.250398058 1.10190059828871 80.7008617404343 4.09653204203938 85.6788247361865 20091070.5353219 T 59 CATAB v2.0g-lin.ifort 2021-Aug-25 07:09:19 2021-Aug-25 07:09
2093-Oct-15 19:31 00:01 Jupiter 1.96137662708488 1.96137651985568 1.96137673431409 5.01599076837803 4.92914407722644 2485801.313075143 1.24619532389519 98.522582125194 4.97032208568158 89.5852433598689 18047452.4639853 T 59 CATAB v2.0g-lin.ifort 2021-Aug-25 07:09:19 2021-Aug-25 07:09
2105-Mar-19 13:34 00:01 Jupiter 1.97701980121286 1.97701960401503 1.97701999841215 5.12612339847339 5.04185214843192 2489973.065470863 1.39537054724973 110.686070736568 6.01065078290085 -86.2265009570592 15888835.1825502 T 59 CATAB v2.0g-lin.ifort 2021-Aug-25 07:09:19 2021-Aug-25 07:09

Alternate Designations
 A918 RH = 1927 DB = 1930 SC1 = 1935 QO = 1936 TJ = 1941 QG = 1947 QC = 1951 GE1 = 1951 JE = 1952 KK = 1952 MO = 1960 WU = A918 WC = A924 SD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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